Remote code execution via stack buffer overflow
Published Nov 14, 2023 · Updated Oct 8, 2025
A stack buffer overflow in Microsoft Host Integration Server 2020 allows remote attackers to execute code after user interaction. Microsoft identifies Host Integration Server and DB2OLEDBv7 as affected, but does not disclose which input overruns the stack buffer. Exploitation requires a separate user to process attacker-controlled content, after which code runs in the affected process.
Summary
What happened
A stack buffer overflow in Microsoft Host Integration Server 2020 allows remote attackers to execute code after user interaction. Microsoft identifies Host Integration Server and DB2OLEDBv7 as affected, but does not disclose which input overruns the stack buffer. Exploitation requires a separate user to process attacker-controlled content, after which code runs in the affected process.
The record
- CVE
- CVE-2023-38151
- Published
- Nov 14, 2023
- Updated
- Oct 8, 2025
- Vendor
- Microsoft
- Product
- Microsoft Host Integration Server 2020
- Classifications
- CWE-908, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 14, 2023CVE publishedPublication date reported by the CVE source.
- Oct 8, 2025Record 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=1.0.0 <KB5032921
- Affected versionversion=7.0 <KB5032921
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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