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Δ / VULNERABILITY RECORD

CVE-2026-62818.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 8.8No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Aug 11, 2026

Disclosure summary

Use after free in Active Directory Certificate Services (AD CS) allows an authorized attacker to execute code over a network.

Source-reported weakness categories

CWE-416

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Aug

Open original source · Updated Aug 11, 2026

Windows Active Directory Certificate Services (AD CS) Remote Code Execution Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 8.8

VendorProduct / associationVersion / bounds
Microsoft update guideWindows 10 Version 1809 for 32-bit Systems (MSRC status code 3)
Microsoft update guideWindows 10 Version 1809 for x64-based Systems (MSRC status code 3)
Microsoft update guideWindows Server 2019 (MSRC status code 3)
Microsoft update guideWindows Server 2019 (Server Core installation) (MSRC status code 3)
Microsoft update guideWindows Server 2022 (MSRC status code 3)
Microsoft update guideWindows Server 2022 (Server Core installation) (MSRC status code 3)
Microsoft update guideWindows Server 2025 (Server Core installation) (MSRC status code 3)
Microsoft update guideWindows Server 2025 (MSRC status code 3)
Microsoft update guideWindows 10 Version 1607 for 32-bit Systems (MSRC status code 3)
Microsoft update guideWindows 10 Version 1607 for x64-based Systems (MSRC status code 3)
Microsoft update guideWindows Server 2016 (MSRC status code 3)
Microsoft update guideWindows Server 2016 (Server Core installation) (MSRC status code 3)
Microsoft update guideWindows Server 2012 (MSRC status code 3)
Microsoft update guideWindows Server 2012 (Server Core installation) (MSRC status code 3)
Microsoft update guideWindows Server 2012 R2 (MSRC status code 3)
Microsoft update guideWindows Server 2012 R2 (Server Core installation) (MSRC status code 3)

Vendor remediation references

  • 5120238 · build 10.0.17763.9121 · product IDs 11568, 11569, 11571, 11572
  • Vendor guidance · product IDs 11568, 11569, 11571, 11572
  • 5120242 · build 10.0.20348.5499 · product IDs 11923, 11924
  • Vendor guidance · product IDs 11923, 11924
  • 5120242 · product IDs 11923, 11924
  • 5120229 · build 10.0.20348.5440 · product IDs 11923, 11924
  • Vendor guidance · product IDs 11923, 11924
  • 5120233 · build 10.0.26100.33296 · product IDs 12437, 12436
  • Vendor guidance · product IDs 12437, 12436
  • 5120233 · product IDs 12437, 12436
  • 5120228 · build 10.0.26100.33222 · product IDs 12437, 12436
  • Vendor guidance · product IDs 12437, 12436
  • 5120228 · product IDs 12437, 12436
  • 5120418 · build 10.0.14393.9418 · product IDs 10852, 10853, 10816, 10855
  • Vendor guidance · product IDs 10852, 10853, 10816, 10855
  • 5120386 · build 6.2.9200.26280 · product IDs 10378, 10379
  • Vendor guidance · product IDs 10378, 10379
  • 5120385 · build 6.3.9600.23338 · product IDs 10483, 10543
  • Vendor guidance · product IDs 10483, 10543

Original records & references

PUBLISHED 2026-08-11T03:00:00-04:00
MODIFIED 2026-08-11T03:00:00-04:00
INGESTED 2026-10-08T12:40:35-04:00