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CVE-2026-70064 Integer underflow (wrap or wraparound) in Windows Kerberos allows an authorized attacker to elevate privileges locally

Description

Integer underflow (wrap or wraparound) in Windows Kerberos allows an authorized attacker to elevate privileges locally.

Affected products and versions

Product Affected versions Fixed in
Windows 10 Version 1607 10.0 10.0.14393.0 → < 10.0.14393.9612 10.0.14393.9612
Windows 10 Version 1809 10.0 10.0.17763.0 → < 10.0.17763.9376 10.0.17763.9376
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 11 Version 24H2 10.0 10.0.26100.0 → < 10.0.26100.9711 10.0.26100.9711
Windows 11 Version 25H2 10.0 10.0.26200.0 → < 10.0.26200.9711 10.0.26200.9711
Windows 11 version 26H1 10.0 10.0.28000.0 → < 10.0.28000.3231 10.0.28000.3231
Windows 11 Version 26H2 10.0 10.0.26300.0 → < 10.0.26300.9711 10.0.26300.9711
Show the 11 other branches
Product Affected versions Fixed in
Windows Server 2012 6.2 6.2.9200.0 → < 6.2.9200.26434 6.2.9200.26434
Windows Server 2012 (Server Core installation) 6.2 6.2.9200.0 → < 6.2.9200.26434 6.2.9200.26434
Windows Server 2012 R2 6.3 6.3.9600.0 → < 6.3.9600.23470 6.3.9600.23470
Windows Server 2012 R2 (Server Core installation) 6.3 6.3.9600.0 → < 6.3.9600.23470 6.3.9600.23470
Windows Server 2016 10.0 10.0.14393.0 → < 10.0.14393.9612 10.0.14393.9612
Windows Server 2016 (Server Core installation) 10.0 10.0.14393.0 → < 10.0.14393.9612 10.0.14393.9612
Windows Server 2019 10.0 10.0.17763.0 → < 10.0.17763.9376 10.0.17763.9376
Windows Server 2019 (Server Core installation) 10.0 10.0.17763.0 → < 10.0.17763.9376 10.0.17763.9376
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

References

Timeline

  1. Published
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The 4535 CVEs of Windows 10 Version 1607 →
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