CVE-2025-21418

Published Feb 11, 2025

Last updated 5 months ago

Exploit known CVSS high 7.8

Overview

Description: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Source: secure@microsoft.com
NVD status: Modified
Products: windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_22h2, windows_11_23h2, windows_11_24h2, windows_server_2008, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2022_23h2, windows_server_2025

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.8
Impact score: 5.9
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability
Exploit added on: Feb 11, 2025
Exploit action due: Mar 4, 2025
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weaknesses

secure@microsoft.com: CWE-122
nvd@nist.gov: NVD-CWE-noinfo

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
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            "matchCriteriaId": "CFBEF986-E905-4BB5-B385-235915023D89",
            "versionEndExcluding": "10.0.10240.20915",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
            "matchCriteriaId": "1BFC22FD-A703-4D65-9126-955BB9540340",
            "versionEndExcluding": "10.0.10240.20915",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*",
            "matchCriteriaId": "B5BC47F5-150E-4D18-8CC4-356F22171D81",
            "versionEndExcluding": "10.0.17763.6893",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
            "matchCriteriaId": "E448ECB4-CE46-4A29-A092-5A4D334E5535",
            "versionEndExcluding": "10.0.17763.6893",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "A932CBA3-651F-4BBA-968A-2D6CA7DF8506",
            "versionEndExcluding": "10.0.19044.5487",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "810C8ECB-619F-447C-B352-E66F7EF5216E",
            "versionEndExcluding": "10.0.19045.5487",
            "vulnerable": true
          },
          {
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            "matchCriteriaId": "30AF7170-5722-4C9C-A8AD-7A9F0C5952EE",
            "versionEndExcluding": "10.0.22621.4890",
            "vulnerable": true
          },
          {
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            "matchCriteriaId": "62FFD367-FB8B-48CA-813F-760E4F393555",
            "versionEndExcluding": "10.0.22631.4890",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "B9C5B9BC-F08B-49F8-82D3-7CC6BDB68995",
            "versionEndExcluding": "10.0.26100.3194",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*",
            "matchCriteriaId": "5F422A8C-2C4E-42C8-B420-E0728037E15C",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*",
            "matchCriteriaId": "AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*",
            "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*",
            "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*",
            "matchCriteriaId": "041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "273EE4B9-8B53-4387-98C8-EC5D2558DB82",
            "versionEndExcluding": "10.0.17763.6893",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "1711CDE0-4C93-40D3-91B7-DE507143A45F",
            "versionEndExcluding": "10.0.20348.3207",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "D3106289-A3E3-4508-B118-17BD2488D681",
            "versionEndExcluding": "10.0.25398.1425",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*",
            "matchCriteriaId": "C5C38103-E0F4-4302-98CE-BD8B20460004",
            "versionEndExcluding": "10.0.26100.3194",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Known exploits

Weaknesses

Social media

Configurations

Related CVEs

References