KB5122876: CVEs fixed (Windows update (KB))

KB5122876 fixes 4 tracked CVEs. Affected systems and fixed versions.

CVE-2026-69354 HIGH 7.8 UPGRADE UPGRADE Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges loca
CVE-2026-69363 HIGH 8.0 UPGRADE UPGRADE Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges over
CVE-2026-69521 HIGH 8.8 UPGRADE UPGRADE Integer overflow or wraparound in Windows iSCSI allows an unauthorized attacker to execute code over a network
CVE-2026-85880 HIGH 7.8 EXPLOITED UPGRADE UPGRADE Microsoft Windows Heap-Based Buffer Overflow Vulnerability

Applies to