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Description

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

PUBLISHED Reserved 2025-12-03 | Published 2026-01-13 | Updated 2026-02-22 | Assigner microsoft




HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-306: Missing Authentication for Critical Function

Product status

16.0.0 (custom) before 16.0.1165.1
affected

16.0.0.0 (custom) before 16.0.4230.2
affected

17.0.1050.2 (custom) before 17.0.1050.2
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20803 (Microsoft SQL Server Elevation of Privilege Vulnerability) vendor-advisory patch

cve.org (CVE-2026-20803)

nvd.nist.gov (CVE-2026-20803)

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