{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update is available that resolves several vulnerabilities and updates one or more 3rd party components in the product versions listed as affected in the advisory.\n\nAn attacker who successfully exploited these vulnerabilities could impact the availability of the product, spoof identities or elevate privileges.",
        "title": "Summary"
      },
      {
        "category": "other",
        "text": "For additional instructions and support please contact your local B&R service organization. For contact information, see https://www.br-automation.com/en/about-us/locations/.\n\nInformation about ABB’s cyber security program and capabilities can be found at www.abb.com/cybersecurity.\n\n\n",
        "title": "Support"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information in this document is subject to change without notice, and should not be construed as a commitment by B&R.\n\nB&R provides no warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, for the information contained in this document, and assumes no responsibility for any errors that may appear in this document. In no event shall B&R or any of its suppliers be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, or from the use of any hardware or software described in this document, even if B&R or its suppliers have been advised of the possibility of such damages.\n\nThis document and parts hereof must not be reproduced or copied without written permission from B&R, and the contents hereof must not be imparted to a third party nor used for any unauthorized purpose.\n\nAll rights to registrations and trademarks reside with their respective owners.",
        "title": "Notice"
      },
      {
        "category": "other",
        "text": "For any installation of software related ABB products we strongly recommend the following (non-exhaustive) list of cyber security practices:\n\n- Isolate special purpose networks (e.g. for automation systems) and remote devices behind firewalls and separate them from any general purpose network (e.g. office or home networks).\n\n- Install physical controls so no unauthorized personnel can access your devices, components, peripheral equipment, and networks.\n\n- Never connect programming software or computers containing programing software to any network other than the network for the devices that it is intended for.\n\n- Scan all data imported into your environment before use to detect potential malware infections.\n\n- Minimize network exposure for all applications and endpoints to ensure that they are not accessible from the Internet unless they are designed for such exposure and the intended use requires such.\n\n- Ensure all nodes are always up to date in terms of installed software, operating system, and firmware patches as well as anti-virus and firewall.\n\n- When remote access is required, use secure methods, such as Virtual Private Networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices.\n\nFor more information on recommended practices, please refer to the following documents listed in the reference section:\n\n- Defense in Depth for B&R products\n",
        "title": "General security recommendations"
      },
      {
        "category": "other",
        "text": "B&R has a rigorous internal cyber security continuous improvement process which involves regular testing with industry leading tools and periodic assessments to identify potential product issues. Occasionally an issue is determined to be a design or coding flaw with implications that may impact product cyber security.\n\nWhen a potential product vulnerability is identified or reported, B&R immediately initiates our vulnerability handling process. This entails validating if the issue is in fact a product issue, identifying root causes, determining what related products may be impacted, developing a remediation, and notifying end users and governmental organizations.\n\nThe resulting Cyber Security Advisory intends to notify customers of the vulnerability and provide details on which products are impacted, how to mitigate the vulnerability or explain workarounds that minimize the potential risk as much as possible. The release of a Cyber Security Advisory should not be misconstrued as an affirmation or indication of an active threat or ongoing campaign targeting the products mentioned here. If B&R is aware of any specific threats, it will be clearly mentioned in the communication.\n\nThe publication of this Cyber Security Advisory is an example of B&R’s commitment to the user community in support of this critical topic. Responsible disclosure is an important element in the chain of trust we work to maintain with our many customers. The release of an Advisory provides timely information which is essential to help ensure our customers are fully informed.",
        "title": "Purpose"
      },
      {
        "category": "faq",
        "text": "When this security advisory was issued, had this vulnerability been publicly disclosed?\n- No, B&R received information about this vulnerability through responsible disclosure \n\nWhen this security advisory was issued, had B&R received any reports that this vulnerability was being exploited?\n- No, B&R had not received any information indicating that this vulnerability had been exploited when this security advisory was originally issued\n",
        "title": "Frequently asked questions"
      }
    ],
    "publisher": {
      "category": "vendor",
      "name": "ABB PSIRT",
      "namespace": "https://www.abb.com/global/en/company/about/cybersecurity/alerts-and-notifications"
    },
    "references": [
      {
        "category": "self",
        "summary": "B&R CYBERSECURITY ADVISORY - PDF Version ",
        "url": "https://br-cws-assets.de-fra-1.linodeobjects.com/SA26P011-661853b7.pdf"
      },
      {
        "category": "self",
        "summary": "B&R CYBERSECURITY ADVISORY - CSAF Version ",
        "url": "https://psirt.abb.com/csaf/2026/sa26p011.json"
      },
      {
        "summary": "Defense in Depth for B&R products",
        "url": "https://www.br-automation.com/fileadmin/Cyber_Security_-_Defense_in_Depth_for_BR_Products-bdd37e82.pdf"
      }
    ],
    "title": "Security Issues addressed in APROL R 4.4-01P5",
    "tracking": {
      "current_release_date": "2026-07-06T00:30:00.000Z",
      "generator": {
        "date": "2026-07-06T07:27:38.665Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.6.5"
        }
      },
      "id": "SA26P011",
      "initial_release_date": "2026-07-06T00:30:00.000Z",
      "revision_history": [
        {
          "date": "2026-07-06T00:30:00.000Z",
          "legacy_version": "A",
          "number": "1",
          "summary": "Initial version."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<R 4.4-01P5",
                "product": {
                  "name": "B&R Industrial Automation GmbH APROL <R 4.4-01P5",
                  "product_id": "AV1"
                }
              },
              {
                "category": "product_version",
                "name": "R 4.4-01P5",
                "product": {
                  "name": "B&R Industrial Automation GmbH APROL R 4.4-01P5",
                  "product_id": "FX1"
                }
              }
            ],
            "category": "product_name",
            "name": "APROL"
          }
        ],
        "category": "vendor",
        "name": "B&R Industrial Automation GmbH"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-6900",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "notes": [
        {
          "category": "description",
          "text": "An Improper Certificate Validation vulnerability in the LDAP Server Connector used in APROL version prior to R 4.4-01P5 may allow network-based attackers to conduct adversary -in-the-middle attacks causing information disclosure or identity spoofing. ",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "fixed": [
          "FX1"
        ],
        "known_affected": [
          "AV1"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "NVD - CVE-2026-6900",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6900"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "The problem is corrected in the following product versions:\n- APROL >= R 4.4-01P5\n\nB&R recommends that customers apply the update at earliest convenience.\n\nThe process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Refer to section “General security recommendations” for further advise on how to keep your system secure.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "workaround",
          "details": "Enable TLS Certificate Verification System-Wide\n\nAdd the following configuration directive to the file /etc/openldap/ldap.conf:\n\nTLS_REQCERT demand\n\nThis tells the LDAP client to require and verify the server's certificate.\n\nConfigure Certificate Verification for Each User Account\n\nEach Linux user account (engineering, runtime, and operator accounts) needs its own configuration file that points to where its issuer certificates are stored.\n\nCreate a .ldaprc file in the home directory of each account and add the appropriate certificate directory path.\n\nFor Engineering Accounts: Create /home/<username>/.ldaprc and add:\n\nTLS_CACERTDIR /home/<username>/ENGIN/cnf/GLOBAL_ENGINEERING/LDAP/issuers/\n\nFor Runtime and Operator Accounts: Create /home/<username>/.ldaprc and add:\n\nTLS_CACERTDIR /home/<username>/RUNTIME/cnf/GLOBAL/LDAP/issuers/\n\nReplace <username> with the actual Linux user account name.\n\nPrepare the Certificate Directories\n\nFor each issuer certificate directory you created above, run this command to enable certificate verification:\n\nopenssl rehash <issuer certificate directory>\n\nThis command indexes the certificates so the system can find them quickly during verification.\n\nDeploy Trusted Certificates\n\nWhen you configure an external LDAP server, manually copy the server's trusted issuer certificate to the appropriate directories you created in “Configure Certificate Verification for Each User Account”.",
          "product_ids": [
            "AV1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 7.1,
            "environmentalSeverity": "HIGH",
            "exploitCodeMaturity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.1,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:H/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "AV1"
          ]
        }
      ],
      "title": "CVE-2026-6900"
    },
    {
      "cve": "CVE-2026-6901",
      "cwe": {
        "id": "CWE-426",
        "name": "Untrusted Search Path"
      },
      "notes": [
        {
          "category": "description",
          "text": "An Untrusted Search Path vulnerability in the webserver used in APROL version prior to R 4.4-01P5 may allow authenticated local attackers to elevate their privileges. ",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "fixed": [
          "FX1"
        ],
        "known_affected": [
          "AV1"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "NVD - CVE-2026-6901",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6901"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "The problem is corrected in the following product versions:\n- APROL >= R 4.4-01P5\n\nB&R recommends that customers apply the update at earliest convenience.\n\nThe process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Refer to section “General security recommendations” for further advise on how to keep your system secure.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "workaround",
          "details": "Remove or replace all wildcard AliasMatch directives in the Apache configuration file \n\nFor example, replace:\n\nAliasMatch ^/(.*)/PROJECTS/(.*)/WEB/(.*)/DOCS/(.*) \"/home/$1/ENGIN/PROJECTS/$2/WEB/$3/DOCS/$4\"\n\nwith:\n\nAliasMatch ^/<systemname>/PROJECTS/<projectname>/WEB/(.*)/DOCS/(.*) \"/home/<systemname>/PROJECTS/<projectname>/WEB/$1/DOCS/$2\"",
          "product_ids": [
            "AV1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 7.4,
            "environmentalSeverity": "HIGH",
            "exploitCodeMaturity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.4,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:H/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "AV1"
          ]
        }
      ],
      "title": "CVE-2026-6901"
    },
    {
      "cve": "CVE-2024-56337",
      "cwe": {
        "id": "CWE-367",
        "name": "Time-of-check Time-of-use (TOCTOU) Race Condition"
      },
      "notes": [
        {
          "category": "description",
          "text": "Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat. The previous mitigation for CVE-2024-50379 was incomplete, permitting an RCE on case insensitive file systems when the default servlet is enabled for write",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "fixed": [
          "FX1"
        ],
        "known_affected": [
          "AV1"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "NVD - CVE-2024-56337",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56337"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "The problem is corrected in the following product versions:\n- APROL >= R 4.4-01P5\n\nB&R recommends that customers apply the update at earliest convenience.\n\nThe process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Refer to section “General security recommendations” for further advise on how to keep your system secure.",
          "product_ids": [
            "AV1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 9.4,
            "environmentalSeverity": "CRITICAL",
            "exploitCodeMaturity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 9.4,
            "temporalSeverity": "CRITICAL",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "AV1"
          ]
        }
      ],
      "title": "CVE-2024-56337"
    },
    {
      "cve": "CVE-2024-54677",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "description",
          "text": "Uncontrolled Resource Consumption vulnerability in the examples web application provided with Apache Tomcat leads to denial of service due to lacking data upload limits",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "fixed": [
          "FX1"
        ],
        "known_affected": [
          "AV1"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "NVD - CVE-2024-54677",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-54677"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "The problem is corrected in the following product versions:\n- APROL >= R 4.4-01P5\n\nB&R recommends that customers apply the update at earliest convenience.\n\nThe process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Refer to section “General security recommendations” for further advise on how to keep your system secure.",
          "product_ids": [
            "AV1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalScore": 5.1,
            "environmentalSeverity": "MEDIUM",
            "exploitCodeMaturity": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.1,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:H/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "AV1"
          ]
        }
      ],
      "title": "CVE-2024-54677"
    },
    {
      "cve": "CVE-2024-52317",
      "cwe": {
        "id": "CWE-326",
        "name": "Inadequate Encryption Strength"
      },
      "notes": [
        {
          "category": "description",
          "text": "Incorrect object re-cycling and re-use vulnerability in Apache Tomcat. Incorrect recycling of the re-quest and response used by HTTP/2 requests could lead to request and/or response mix-up between users",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "fixed": [
          "FX1"
        ],
        "known_affected": [
          "AV1"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "NVD - CVE-2024-52317",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-52317"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "The problem is corrected in the following product versions:\n- APROL >= R 4.4-01P5\n\nB&R recommends that customers apply the update at earliest convenience.\n\nThe process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Refer to section “General security recommendations” for further advise on how to keep your system secure.",
          "product_ids": [
            "AV1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "environmentalScore": 6.2,
            "environmentalSeverity": "MEDIUM",
            "exploitCodeMaturity": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.2,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:H/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "AV1"
          ]
        }
      ],
      "title": "CVE-2024-52317"
    },
    {
      "cve": "CVE-2024-50379",
      "cwe": {
        "id": "CWE-367",
        "name": "Time-of-check Time-of-use (TOCTOU) Race Condition"
      },
      "notes": [
        {
          "category": "description",
          "text": "Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case-insensitive file systems when the default servlet is enabled for write (non-default configuration)",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "fixed": [
          "FX1"
        ],
        "known_affected": [
          "AV1"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "NVD - CVE-2024-50379",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50379"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "The problem is corrected in the following product versions:\n- APROL >= R 4.4-01P5\n\nB&R recommends that customers apply the update at earliest convenience.\n\nThe process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.",
          "product_ids": [
            "AV1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Refer to section “General security recommendations” for further advise on how to keep your system secure.",
          "product_ids": [
            "AV1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 9.4,
            "environmentalSeverity": "CRITICAL",
            "exploitCodeMaturity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 9.4,
            "temporalSeverity": "CRITICAL",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "AV1"
          ]
        }
      ],
      "title": "CVE-2024-50379"
    }
  ]
}