Unauthenticated service interruption via integer overflow
Published Sep 8, 2026 · Updated Sep 10, 2026
Integer overflow in Microsoft SQL Server allows remote attackers to deny database service through crafted network traffic. Microsoft has not disclosed the affected SQL Server component, the arithmetic operation that overflows, or the request field that triggers it. No authentication or user interaction is required; successful exploitation interrupts database availability without reported data disclosure or modification.
Summary
What happened
Integer overflow in Microsoft SQL Server allows remote attackers to deny database service through crafted network traffic. Microsoft has not disclosed the affected SQL Server component, the arithmetic operation that overflows, or the request field that triggers it. No authentication or user interaction is required; successful exploitation interrupts database availability without reported data disclosure or modification.
The record
- CVE
- CVE-2026-67376
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Microsoft
- Product
- Microsoft SQL Server 2022
- Classifications
- CWE-190, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 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=16.0.0.0 <16.0.4275.2
- Affected versionversion=16.0.0 <16.0.1200.5
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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