{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-89158 PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-89158.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write.",
    "tracking": {
      "current_release_date": "2026-09-19T01:47:40.000Z",
      "generator": {
        "date": "2026-09-22T07:01:43.802Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-89158",
      "initial_release_date": "2026-09-12T01:03:29.000Z",
      "revision_history": [
        {
          "date": "2026-09-12T01:03:29.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-09-16T14:47:19.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "Information published."
        },
        {
          "date": "2026-09-17T01:04:31.000Z",
          "legacy_version": "3",
          "number": "3",
          "summary": "Information published."
        },
        {
          "date": "2026-09-19T01:47:40.000Z",
          "legacy_version": "4",
          "number": "4",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<azl3 pcre2 0:10.42-3.azl3",
                "product": {
                  "name": "<azl3 pcre2 0:10.42-3.azl3",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 pcre2 0:10.42-3.azl3",
                "product": {
                  "name": "azl3 pcre2 0:10.42-3.azl3",
                  "product_id": "21801"
                }
              }
            ],
            "category": "product_name",
            "name": "pcre2"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 php 0:8.3.33-1.azl3",
                "product": {
                  "name": "azl3 php 0:8.3.33-1.azl3",
                  "product_id": "5"
                }
              }
            ],
            "category": "product_name",
            "name": "php"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 nmap 0:7.95-5.azl3",
                "product": {
                  "name": "azl3 nmap 0:7.95-5.azl3",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "nmap"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 qtbase 0:6.6.3-5.azl3",
                "product": {
                  "name": "azl3 qtbase 0:6.6.3-5.azl3",
                  "product_id": "6"
                }
              }
            ],
            "category": "product_name",
            "name": "qtbase"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 rust 0:1.75.0-31.azl3",
                "product": {
                  "name": "azl3 rust 0:1.75.0-31.azl3",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version_range",
                "name": "azl3 rust 0:1.96.1-1.azl3",
                "product": {
                  "name": "azl3 rust 0:1.96.1-1.azl3",
                  "product_id": "4"
                }
              }
            ],
            "category": "product_name",
            "name": "rust"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "<azl3 pcre2 0:10.42-3.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-3"
        },
        "product_reference": "3",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 pcre2 0:10.42-3.azl3 as a component of Azure Linux 3.0",
          "product_id": "21801-17084"
        },
        "product_reference": "21801",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 php 0:8.3.33-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-5"
        },
        "product_reference": "5",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 nmap 0:7.95-5.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 qtbase 0:6.6.3-5.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-6"
        },
        "product_reference": "6",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 rust 0:1.75.0-31.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 rust 0:1.96.1-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-4"
        },
        "product_reference": "4",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-89158",
      "cwe": {
        "id": "CWE-190",
        "name": "Integer Overflow or Wraparound"
      },
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "21801-17084"
        ],
        "known_affected": [
          "17084-3",
          "17084-5",
          "17084-2",
          "17084-6",
          "17084-1",
          "17084-4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-89158 PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-89158.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-09-12T01:03:29.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-5"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-09-12T01:03:29.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-2"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-09-12T01:03:29.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-6"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-09-12T01:03:29.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-09-12T01:03:29.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-4"
          ]
        },
        {
          "category": "vendor_fix",
          "date": "2026-09-12T01:03:29.000Z",
          "details": "0:10.48-1.azl3:Security Update",
          "product_ids": [
            "17084-3"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 6.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L",
            "version": "3.1"
          },
          "products": [
            "17084-3",
            "17084-5",
            "17084-2",
            "17084-6",
            "17084-1",
            "17084-4"
          ]
        }
      ],
      "title": "PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write."
    }
  ]
}