CVE-2026-77488

Published: Sep 8, 2026Modified: Sep 15, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitability: 1.8 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

Description

Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.

Affected (8)

Products: Microsoft: Sql Server 2017, Sql Server 2019, Sql Server 2022, Sql Server 2025

4 products

Sql Server 2017

Sql Server 2019

Sql Server 2022

Sql Server 2025

Configuration A

8 vulnerable

Vulnerable Software	Affected Versions
Microsoft Sql Server 2017	version < 14.0.2130.4
Microsoft Sql Server 2017	14.0.3006.16 ≤ version < 14.0.3550.4
Microsoft Sql Server 2019	version < 15.0.2190.7
Microsoft Sql Server 2019	15.0.4003.23 ≤ version < 15.0.4490.9
Microsoft Sql Server 2022	version < 16.0.1200.5
Microsoft Sql Server 2022	16.0.4003.1 ≤ version < 16.0.4275.2
Microsoft Sql Server 2025	version < 17.0.1135.8
Microsoft Sql Server 2025	17.0.4006.2 ≤ version < 17.0.4085.5

Related CWEs

Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77488

Source: secure@microsoft.com

Vendor AdvisoryPatch

Timeline

No history available yet.