CVE-2026-20803

high Microsoft
CVSS v3 Base Score
7.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 82% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: January 13, 2026 (121 days ago)
Last Modified: January 16, 2026
Vendor: Microsoft

Description

Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.

CWE

CWE-306

Affected Products

microsoft sql server 2022microsoft sql server 2025

References

🔗 msrc.microsoft.com