CVE-2025-54106: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-09 · updated 2026-06-17
Weakness: CWE-190

Description

Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

Affected products

Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: before 10.0.14393.8422 — fixed in 10.0.14393.8422
Microsoft Windows Server 2019: before 10.0.17763.7792 — fixed in 10.0.17763.7792
Microsoft Windows Server 2022: before 10.0.20348.4106 — fixed in 10.0.20348.4106
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1849 — fixed in 10.0.25398.1849
Microsoft Windows Server 2025: before 10.0.26100.6508 — fixed in 10.0.26100.6508
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.22774 — fixed in 6.3.9600.22774
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.8422 — fixed in 10.0.14393.8422
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.7792 — fixed in 10.0.17763.7792
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.4171 — fixed in 10.0.20348.4171
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.1849 — fixed in 10.0.25398.1849
Microsoft Windows Server 2025: from 10.0.26100.0 before 10.0.26100.6584 — fixed in 10.0.26100.6584

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2016 10.0.14393.8422; Microsoft Windows Server 2019 10.0.17763.7792; Microsoft Windows Server 2022 10.0.20348.4106; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1849; Microsoft Windows Server 2025 10.0.26100.6508; Microsoft Windows Server 2012 R2 6.3.9600.22774; Microsoft Windows Server 2016 10.0.14393.8422; Microsoft Windows Server 2019 10.0.17763.7792; Microsoft Windows Server 2022 10.0.20348.4171; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1849; Microsoft Windows Server 2025 10.0.26100.6584. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54106

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