Information disclosure via uninitialized RRAS resource
Published Apr 8, 2025 · Updated Aug 10, 2026
Information disclosure in Microsoft Windows Server RRAS allows remote attackers to read unintended data via crafted network traffic. RRAS uses a resource before initialization while processing the traffic, causing data not intended for the requester to be returned. Exploitation requires user interaction; the published impact is limited to disclosure, with no integrity or service interruption.
Summary
What happened
Information disclosure in Microsoft Windows Server RRAS allows remote attackers to read unintended data via crafted network traffic. RRAS uses a resource before initialization while processing the traffic, causing data not intended for the requester to be returned. Exploitation requires user interaction; the published impact is limited to disclosure, with no integrity or service interruption.
The record
- CVE
- CVE-2025-27474
- Published
- Apr 8, 2025
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-908
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 8, 2025CVE publishedPublication date reported by the CVE source.
- Aug 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.17763.0 <10.0.17763.7136
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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