CVE-2026-20803 — HIGH (7.2)

Q: What is CVE-2026-20803?

CVE-2026-20803 is a vulnerability with a CVSS score of 7.2 (HIGH). Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.

Q: How severe is CVE-2026-20803?

CVE-2026-20803 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-20803?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Sql Server 2022, Microsoft Sql Server 2025.

Vulnerability Description

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

CVSS Score

7.2

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Microsoft	Sql Server 2022	>= 16.0.1000.6, < 16.0.1165.1
Microsoft	Sql Server 2025	17.0.1000.7

Related Weaknesses (CWE)

CWE-306

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20803Vendor Advisory

FAQ

What is CVE-2026-20803?

CVE-2026-20803 is a vulnerability with a CVSS score of 7.2 (HIGH). Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.

How severe is CVE-2026-20803?

CVE-2026-20803 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-20803?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Sql Server 2022, Microsoft Sql Server 2025.