Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate...

zetlyn/cve-ghsa vulnerability ghsa GHSA-q9jh-jffv-9xvh cve CVE-2026-96940 known 2026-10-02

https://github.com/advisories/GHSA-q9jh-jffv-9xvh

Properties

cvss8.8
receipt
Source
GitHub advisories
Its words
8.8
Read by
field:cvss.score
Said since
2026-10-03 00:02 UTC
Last answered
2026-10-04 18:15 UTC
Original
open at the source
What the source handed over
{
  "comments": 0,
  "credits": [],
  "cve_id": "CVE-2026-96940",
  "cvss": {
    "score": 8.8,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  },
  "cvss_severities": {
    "cvss_v3": {
      "score": 8.8,
      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    },
    "cvss_v4": {
      "score": 0.0,
      "vector_string": null
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-1390",
      "name": "Weak Authentication"
    }
  ],
  "description": "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.",
  "ghsa_id": "GHSA-q9jh-jffv-9xvh",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-q9jh-jffv-9xvh",
  "identifiers": [
    {
      "type": "GHSA",
      "value": "GHSA-q9jh-jffv-9xvh"
    },
    {
      "type": "CVE",
      "value": "CVE-2026-96940"
    }
  ],
  "nvd_published_at": "2026-10-02T19:16:43Z",
  "published_at": "2026-10-02T21:32:05Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-96940",
    "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96940",
    "https://github.com/advisories/GHSA-q9jh-jffv-9xvh"
  ],
  "repository_advisory_url": null,
  "severity": "high",
  "source_code_location": "",
  "summary": "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate...",
  "type": "unreviewed",
  "updated_at": "2026-10-02T21:32:13Z",
  "url": "https://api.github.com/advisories/GHSA-q9jh-jffv-9xvh",
  "vulnerabilities": [],
  "withdrawn_at": null
}
cweCWE-1390
receipt
Source
GitHub advisories
Its words
CWE-1390
Read by
field:cwes[].cwe_id
Said since
2026-10-03 00:02 UTC
Last answered
2026-10-04 18:15 UTC
Original
open at the source
What the source handed over
{
  "comments": 0,
  "credits": [],
  "cve_id": "CVE-2026-96940",
  "cvss": {
    "score": 8.8,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  },
  "cvss_severities": {
    "cvss_v3": {
      "score": 8.8,
      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    },
    "cvss_v4": {
      "score": 0.0,
      "vector_string": null
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-1390",
      "name": "Weak Authentication"
    }
  ],
  "description": "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.",
  "ghsa_id": "GHSA-q9jh-jffv-9xvh",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-q9jh-jffv-9xvh",
  "identifiers": [
    {
      "type": "GHSA",
      "value": "GHSA-q9jh-jffv-9xvh"
    },
    {
      "type": "CVE",
      "value": "CVE-2026-96940"
    }
  ],
  "nvd_published_at": "2026-10-02T19:16:43Z",
  "published_at": "2026-10-02T21:32:05Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-96940",
    "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96940",
    "https://github.com/advisories/GHSA-q9jh-jffv-9xvh"
  ],
  "repository_advisory_url": null,
  "severity": "high",
  "source_code_location": "",
  "summary": "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate...",
  "type": "unreviewed",
  "updated_at": "2026-10-02T21:32:13Z",
  "url": "https://api.github.com/advisories/GHSA-q9jh-jffv-9xvh",
  "vulnerabilities": [],
  "withdrawn_at": null
}
severityhigh
From 7.0 to 8.9.
receipt
Source
GitHub advisories
Its words
high
Read by
field:severity
Said since
2026-10-03 00:02 UTC
Last answered
2026-10-04 18:15 UTC
Original
open at the source
What the source handed over
{
  "comments": 0,
  "credits": [],
  "cve_id": "CVE-2026-96940",
  "cvss": {
    "score": 8.8,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  },
  "cvss_severities": {
    "cvss_v3": {
      "score": 8.8,
      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    },
    "cvss_v4": {
      "score": 0.0,
      "vector_string": null
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-1390",
      "name": "Weak Authentication"
    }
  ],
  "description": "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.",
  "ghsa_id": "GHSA-q9jh-jffv-9xvh",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-q9jh-jffv-9xvh",
  "identifiers": [
    {
      "type": "GHSA",
      "value": "GHSA-q9jh-jffv-9xvh"
    },
    {
      "type": "CVE",
      "value": "CVE-2026-96940"
    }
  ],
  "nvd_published_at": "2026-10-02T19:16:43Z",
  "published_at": "2026-10-02T21:32:05Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-96940",
    "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96940",
    "https://github.com/advisories/GHSA-q9jh-jffv-9xvh"
  ],
  "repository_advisory_url": null,
  "severity": "high",
  "source_code_location": "",
  "summary": "Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate...",
  "type": "unreviewed",
  "updated_at": "2026-10-02T21:32:13Z",
  "url": "https://api.github.com/advisories/GHSA-q9jh-jffv-9xvh",
  "vulnerabilities": [],
  "withdrawn_at": null
}

Text

Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate... Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.