CVE-2026-21262

high

Description

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

From the Tenable Blog

March 2026 Microsoft Patch Tuesday | Tenable®

March 2026 Microsoft Patch Tuesday | Tenable®

Published: 2026-03-10

Microsoft patched 83 CVEs in March including two zero-day vulnerabilities that were publicly disclosed, including CVE-2026-21262 and CVE-2026-26127.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262

https://www.malwarebytes.com/blog/news/2026/03/march-2026-patch-tuesday-fixes-two-zero-day-vulnerabilities

https://www.infosecurity-magazine.com/news/microsoft-fixes-two-publicly/

https://www.helpnetsecurity.com/2026/03/11/march-2026-patch-tuesday/

https://www.darkreading.com/application-security/microsoft-patches-83-cves-march-update

https://thehackernews.com/2026/03/microsoft-patches-84-flaws-in-march.html

https://hackread.com/microsoft-march-patch-tuesday-two-0-days-flaws/

https://www.theregister.com/2026/03/10/zeroclick_microsoft_info_disclosure_bug/

https://www.securityweek.com/microsoft-patches-83-vulnerabilities/

https://securityaffairs.com/189266/security/microsoft-patch-tuesday-security-updates-for-march-2026-fixed-84-bugs.html

https://cyberscoop.com/microsoft-patch-tuesday-march-2026/

https://www.tenable.com/blog/microsofts-march-2026-patch-tuesday-addresses-83-cves-cve-2026-21262-cve-2026-26127

Details

Source: Mitre, NVD

Published: 2026-03-10

Updated: 2026-03-13

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.00081