CVE-2026-20803

EUVD-2026-2196
Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.2 HIGH
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
microsoftCNA
7.2 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Base Score
CVSS 3.x
EPSS Score
Percentile: 17%
Affected Products (NVD)
VendorProductVersion
microsoftsql_server_2022
16.0.1000.6 ≤
𝑥
< 16.0.1165.1
microsoftsql_server_2022
16.0.4003.1 ≤
𝑥
< 16.0.4230.2
microsoftsql_server_2025
17.0.1000.7
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20803