Remote code execution via RRAS heap overflow
Published Dec 10, 2024 · Updated Jun 9, 2026
A heap-based buffer overflow in Microsoft Windows Server RRAS allows remote attackers to execute code through network input. Microsoft identifies the flaw as a heap-based buffer overflow but has not disclosed the affected RRAS parser or the input operation that exceeds its heap allocation. Exploitation requires no prior privileges but does require a user to perform an unspecified action, and successful exploitation grants code execution in the service's security context.
Summary
What happened
A heap-based buffer overflow in Microsoft Windows Server RRAS allows remote attackers to execute code through network input. Microsoft identifies the flaw as a heap-based buffer overflow but has not disclosed the affected RRAS parser or the input operation that exceeds its heap allocation. Exploitation requires no prior privileges but does require a user to perform an unspecified action, and successful exploitation grants code execution in the service's security context.
The record
- CVE
- CVE-2024-49086
- Published
- Dec 10, 2024
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 10, 2024CVE publishedPublication date reported by the CVE source.
- Jun 9, 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 <10.0.17763.6659
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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