Remote code execution via heap buffer overflow
Published Apr 9, 2024 · Updated May 3, 2025
Heap-based buffer overflow in Microsoft ODBC Driver 17 and 18 for SQL Server allows remote attackers to execute code via a malicious server. The driver mishandles attacker-controlled data received while processing a server response and writes beyond a heap buffer; Microsoft has not disclosed a finer code locus. Exploitation requires an application user to initiate the connection, and successful corruption grants code execution in that application's context.
Summary
What happened
Heap-based buffer overflow in Microsoft ODBC Driver 17 and 18 for SQL Server allows remote attackers to execute code via a malicious server. The driver mishandles attacker-controlled data received while processing a server response and writes beyond a heap buffer; Microsoft has not disclosed a finer code locus. Exploitation requires an application user to initiate the connection, and successful corruption grants code execution in that application's context.
The record
- CVE
- CVE-2024-28943
- Published
- Apr 9, 2024
- Updated
- May 3, 2025
- Vendor
- Microsoft
- Product
- Microsoft ODBC Driver 18 for SQL Server
- Classifications
- CWE-122, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 9, 2024CVE publishedPublication date reported by the CVE source.
- May 3, 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=18.0.0.0 <18.3.3.1
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.
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Technologies
Your stack
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Your stack
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