CVE-2026-108457 Out-of-bounds write in Microsoft Windows PDF allows an unauthorized attacker to execute code over a network

Description

Out-of-bounds write in Microsoft Windows PDF allows an unauthorized attacker to execute code over a network.

Affected products and versions

Product	Affected versions	Fixed in
Windows 10 Version 21H2 10.0	10.0.19044.0 → < 10.0.19044.7807	10.0.19044.7807
Windows 10 Version 22H2 10.0	10.0.19045.0 → < 10.0.19045.7807	10.0.19045.7807
Windows 11 Version 23H2 10.0	10.0.22631.0 → < 10.0.22631.7652	10.0.22631.7652
Windows Server 2022 10.0	10.0.20348.0 → < 10.0.20348.5761	10.0.20348.5761
Windows Server 2025 10.0	10.0.26100.0 → < 10.0.26100.33650	10.0.26100.33650
Windows Server 2025 (Server Core installation) 10.0	10.0.26100.0 → < 10.0.26100.33650	10.0.26100.33650

Other CVEs of Windows 10 Version 21H2

The 4539 CVEs of Windows 10 Version 21H2 →

CVE-2026-108136 Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally 7.8 High CVE-2026-108135 Improper link resolution before file access ('link following') in Windows Backup Engine allows an authorized attacker to… 7.0 High CVE-2026-108132 Double free in Windows Kerberos allows an authorized attacker to elevate privileges locally 7.0 High CVE-2026-108129 Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network 6.5 Medium