Oct 2026: Microsoft SQL Server Elevation of Privilege Vulnerability
CVE-2026-88088 Published on October 13, 2026
Microsoft SQL Server Elevation of Privilege Vulnerability
Integer overflow or wraparound in SQL Server allows an authorized attacker to elevate privileges locally.
Weakness Type
Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
Products Associated with CVE-2026-88088
Want to know whenever a new CVE is published for Microsoft products? stack.watch will email you.
Affected Versions
Microsoft SQL Server 2019 (GDR):- Version 15.0.0 and below 15.0.2200.2 is affected.
- Version 15.0.4003.23 and below 15.0.4500.2 is affected.
- Version 16.0.0 and below 16.0.1210.3 is affected.
- Version 16.0.4003.1 and below 16.0.4305.5 is affected.
- Version - is affected.
- Version 17.0.4006.2 and below 17.0.5015.4 is affected.
- Version 17.0.1050.2 and below 17.0.1145.4 is affected.