Medium6.5Microsoft Server

Medium [CVE-2025-26667] Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2025-26667 affecting Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2012 (Server Core installation).

CVE-2025-26667 Published Apr 8, 2025Updated by vendor Aug 10, 2026

CVE-2025-26667

Affected products & platforms

Microsoft ServerWindows Server

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Summary

Exposure of sensitive information to an unauthorized actor in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.

Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2008 Service Pack 2; Windows Server 2008 Service Pack 2 (Server Core installation); and 12 more.

Affected products named by the advisory: Windows Server 2012 (Server Core installation); Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); and 2 more.

Affected versions

Windows Server 2008 R2 Service Pack 1 6.1.7601.0 before 6.1.7601.27670
Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 before 6.1.7601.27670
Windows Server 2008 Service Pack 2 6.0.6003.0 before 6.0.6003.23220
Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 before 6.0.6003.23220
Windows Server 2012 6.2.9200.0 before 6.2.9200.25423
Windows Server 2012 (Server Core installation) 6.2.9200.0 before 6.2.9200.25423
Windows Server 2012 R2 6.3.9600.0 before 6.3.9600.22523
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 before 6.3.9600.22523
Windows Server 2016 10.0.14393.0 before 10.0.14393.7969
Windows Server 2016 (Server Core installation) 10.0.14393.0 before 10.0.14393.7969
Windows Server 2019 10.0.17763.0 before 10.0.17763.7136
Windows Server 2019 (Server Core installation) 10.0.17763.0 before 10.0.17763.7136

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

6.1.7601.27670
6.0.6003.23220
6.2.9200.25423
6.3.9600.22523
10.0.14393.7969
10.0.17763.7136
10.0.20348.3453
10.0.25398.1551
10.0.26100.3775

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation

Upgrade to a fixed release: 6.1.7601.27670, 6.0.6003.23220, 6.2.9200.25423, 6.3.9600.22523, 10.0.14393.7969, 10.0.17763.7136. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Discussion(0)

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