Remote code execution via heap buffer overflow
Published Oct 8, 2024 · Updated Aug 19, 2026
A heap-based buffer overflow in Microsoft Windows RRAS on affected Windows Server builds allows remote attackers to execute code. Microsoft identifies the flaw in RRAS but has not published the malformed input, vulnerable routine, or precise out-of-bounds operation. Exploitation requires user interaction and network reachability, and successful exploitation executes code in the RRAS service context.
Summary
What happened
A heap-based buffer overflow in Microsoft Windows RRAS on affected Windows Server builds allows remote attackers to execute code. Microsoft identifies the flaw in RRAS but has not published the malformed input, vulnerable routine, or precise out-of-bounds operation. Exploitation requires user interaction and network reachability, and successful exploitation executes code in the RRAS service context.
The record
- CVE
- CVE-2024-43589
- Published
- Oct 8, 2024
- Updated
- Aug 19, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 8, 2024CVE publishedPublication date reported by the CVE source.
- Aug 19, 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 <10.0.17763.6414
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.
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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