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CVE-2026-62772

7.8 high SSVC exploitation: none Analyzed
NVD · CVE.org

Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 4

  1. Cpes+2 CPE criteria (now 2)NVD modified 2026-10-23 19:10
  2. StatusPublished → AnalyzedNVD modified 2026-10-23 19:10
  3. CVSS7.8 (v3.1, CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C) → 7.8 (v3.1, CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)NVD modified 2026-10-23 19:10
  4. First seenCVSS 7.8 · microsoftNVD modified 2026-10-21 20:52

Affected (CPE criteria) 2

  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*

References 1