Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
How could an attacker exploit this vulnerability?
An authenticated attacker could exploit this vulnerability by connecting to an affected SQL Server and submitting a specially crafted query or request that triggers a memory corruption condition, allowing the attacker to execute code on the server. Authentication is required; user interaction is not required.
According to the CVSS metric, the attack complexity is high (AC:H). What does this mean for this vulnerability?
An attacker would need specific conditions to be in place (i.e. particular protocol settings, or configurations, etc.) before an attack could succeed, which reduces the likelihood of widespread or opportunistic exploitation.
Security updates
17.0.4085.5 — https://support.microsoft.com/help/5122769
16.0.4275.2 — https://support.microsoft.com/help/5122768
15.0.2190.7 — https://support.microsoft.com/help/5122773
16.0.1200.5 — https://support.microsoft.com/help/5122771
17.0.1135.8 — https://support.microsoft.com/help/5122770
15.0.4490.9 — https://support.microsoft.com/help/5122772
Vulnerabilities 1
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High 8.5
Microsoft SQL Server Remote Code Execution Vulnerability
Stack-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Revision history
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#1
Information published.
References
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CVE-2026-67379 Microsoft SQL Server Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67379
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss