CVE-2025-29963: Microsoft Windows 10 1809

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Windows 10 1809: before 10.0.17763.7314 (fixed in 10.0.17763.7314)
• Microsoft Windows 10 21h2: before 10.0.19044.5854 (fixed in 10.0.19044.5854)
• Microsoft Windows 10 22h2: before 10.0.19045.5854 (fixed in 10.0.19045.5854)
• Microsoft Windows 11 22h2: before 10.0.22621.5335 (fixed in 10.0.22621.5335)
• Microsoft Windows 11 23h2: before 10.0.22631.5335 (fixed in 10.0.22631.5335)
• Microsoft Windows 11 24h2: before 10.0.26100.4061 (fixed in 10.0.26100.4061)
• Microsoft Windows Server 2019: before 10.0.17763.7314 (fixed in 10.0.17763.7314)
• Microsoft Windows Server 2022: before 10.0.20348.3692 (fixed in 10.0.20348.3692)
• Microsoft Windows Server 2022 23h2: before 10.0.25398.1611 (fixed in 10.0.25398.1611)
• Microsoft Windows Server 2025: before 10.0.26100.4061 (fixed in 10.0.26100.4061)

Published 2025-05-13. Last modified 2026-06-17.