Sep 2026: SQL Server Elevation of Privilege Vulnerability
CVE-2026-77480 Published on September 8, 2026
SQL Server Elevation of Privilege Vulnerability
Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Weakness Type
Insufficient Granularity of Access Control
The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets.
Products Associated with CVE-2026-77480
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Affected Versions
Microsoft SQL Server 2017 (CU 31):- Version 14.0.0 and below 14.0.3550.4 is affected.
- Version 14.0.0 and below 14.0.2130.4 is affected.
- Version 15.0.0.0 and below 15.0.4490.9 is affected.
- Version 15.0.0 and below 15.0.2190.7 is affected.
- Version 16.0.0.0 and below 16.0.4275.2 is affected.
- Version 16.0.0 and below 16.0.1200.5 is affected.
- Version 17.0.0.0 and below 17.0.4085.5 is affected.
- Version 17.0.1050.2 and below 17.0.1135.8 is affected.