CVE-2026-69676: Windows Kerberos Remote Code Execution Vulnerability
Authentication bypass by capture-replay in Windows Kerberos allows an authorized attacker to execute code over a network.
Other sources
Windows Kerberos Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
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Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
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Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
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Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
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Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
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Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
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Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.19044.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.20348.5622Patch KB5122882 - Upgrade
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Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must be authorized and able to reach the affected system over the network. The supplied severity vector indicates low attack complexity and no user interaction requirement.
What level of impact could successful exploitation have?
Successful exploitation can allow remote code execution. The supplied vector rates confidentiality, integrity, and availability impacts as high.
Which systems should be assessed for exposure?
Assess Microsoft Windows 10 and Windows 11 endpoints, along with Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025 systems that use Windows Kerberos.
Is public exploit code known to be available?
The provided exploit-code maturity value is E:U, indicating exploit code is unproven or unknown in the supplied data.