Out-of-bounds read in Windows DNS allows an authorized attacker to execute code over a network.
Fix
Microsoft's update · Important
- KB5126655 — Windows Server 2022, Windows Server 2022 (Server Core installation) · build 10.0.20348.5761 · restart required
- KB5126646 — Windows Server 2025 (Server Core installation), Windows Server 2025 · build 10.0.26100.33650 · restart required
From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-29 · Exploitation Unlikely.
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 3
- Cpes+2 CPE criteria (now 2)NVD modified 2026-10-16 17:35
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-16 17:35
- First seenCVSS 6.5NVD modified 2026-10-13 22:18
Affected (CPE criteria) 2
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*