Summary
Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What type of information could be disclosed by this vulnerability?
An attacker who successfully exploited this vulnerability could potentially read portions of heap memory.
According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
This attack requires an admin user on the client to connect to a malicious server and then take specific actions which could result in information disclosure.
Security updates
10.0.17763.7136 — https://support.microsoft.com/help/5055519
10.0.20348.3453 — https://support.microsoft.com/help/5055526
10.0.26100.3775 — https://support.microsoft.com/help/5055523
10.0.25398.1551 — https://support.microsoft.com/help/5055527
10.0.14393.7969 — https://support.microsoft.com/help/5055521
6.0.6003.23220 — https://support.microsoft.com/help/5055609
6.0.6003.23220 — https://support.microsoft.com/help/5055596
6.1.7601.27670 — https://support.microsoft.com/help/5055561
6.1.7601.27670 — https://support.microsoft.com/help/5055570
6.2.9200.25423 — https://support.microsoft.com/help/5055581
6.3.9600.22523 — https://support.microsoft.com/help/5055557
Vulnerabilities 1
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Medium 6.5
Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability
Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
Revision history
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#1
Information published.
References
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CVE-2025-26664 Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26664
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss