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8.1 High

CVE-2026-42987 Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network

Description

Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.

Affected products and versions

Product Affected versions Fixed in
Windows Server 2012 6.2 6.2.9200.0 → < 6.2.9200.26132 6.2.9200.26132
Windows Server 2012 (Server Core installation) 6.2 6.2.9200.0 → < 6.2.9200.26132 6.2.9200.26132
Windows Server 2012 R2 6.3 6.3.9600.0 → < 6.3.9600.23228 6.3.9600.23228
Windows Server 2012 R2 (Server Core installation) 6.3 6.3.9600.0 → < 6.3.9600.23228 6.3.9600.23228
Windows Server 2016 10.0 10.0.14393.0 → < 10.0.14393.9234 10.0.14393.9234
Windows Server 2016 (Server Core installation) 10.0 10.0.14393.0 → < 10.0.14393.9234 10.0.14393.9234
Windows Server 2019 10.0 10.0.17763.0 → < 10.0.17763.8880 10.0.17763.8880
Windows Server 2019 (Server Core installation) 10.0 10.0.17763.0 → < 10.0.17763.8880 10.0.17763.8880
Windows Server 2022 10.0 10.0.20348.0 → < 10.0.20348.5256 10.0.20348.5256
Show the 2 other branches
Product Affected versions Fixed in
Windows Server 2025 10.0 10.0.26100.0 → < 10.0.26100.32995 10.0.26100.32995
Windows Server 2025 (Server Core installation) 10.0 10.0.26100.0 → < 10.0.26100.32995 10.0.26100.32995

Other CVEs of Windows Server 2012

The 3865 CVEs of Windows Server 2012 →
CVE-2026-108136 Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally 7.8 High CVE-2026-108129 Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network 6.5 Medium CVE-2026-108131 No cwe for this issue in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform… 7.5 High CVE-2026-97844 Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network 6.5 Medium
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