CVE-2026-20868: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Other sources
Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 6.0.6003.23717Patch KB5073700 - Upgrade
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Fixed in 6.1.7601.28117Patch KB5073699 - Upgrade
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Fixed in 6.3.9600.22968Patch KB5073696 - Upgrade
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Fixed in 6.2.9200.25868Patch KB5073698 - Upgrade
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Fixed in 10.0.14393.8783Patch KB5073722 - Upgrade
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Fixed in 10.0.26100.7623Patch KB5074109 - Upgrade
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Fixed in 10.0.26100.32230Patch KB5073379 - Upgrade
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Fixed in 10.0.25398.2092Patch KB5073450 - Upgrade
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Fixed in 10.0.26200.7623Patch KB5074109 - Upgrade
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Fixed in 10.0.22631.6491Patch KB5073455 - Upgrade
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Fixed in 10.0.19045.6809Patch KB5073724 - Upgrade
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Fixed in 10.0.19044.6809Patch KB5073724 - Upgrade
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Fixed in 10.0.20348.4648Patch KB5073457 - Upgrade
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Fixed in 10.0.17763.8276Patch KB5073723
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20868?
CVE-2026-20868 is categorized as a critical vulnerability due to its potential for remote code execution.
How do I fix CVE-2026-20868?
To fix CVE-2026-20868, apply the security patches provided by Microsoft for affected Windows Server and client versions.
What types of systems are impacted by CVE-2026-20868?
CVE-2026-20868 affects multiple versions of Windows Server, including 2008, 2012, and 2016, as well as Windows 10 and 11.
What does CVE-2026-20868 exploit?
CVE-2026-20868 exploits a heap-based buffer overflow in the Windows Routing and Remote Access Service (RRAS).
Can CVE-2026-20868 be exploited remotely?
Yes, CVE-2026-20868 allows unauthorized attackers to execute code over a network, making it a remote vulnerability.