CVE-2026-26127

high

Description

Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

From the Tenable Blog

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-2026-26127

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-10691

Details

Source: Mitre, NVD

Published: 2026-03-10

Updated: 2026-04-01

Named Vulnerability: GHSA-c8gq-rhqh-wgwmNamed Vulnerability: GHSA-73j8-2gch-69rq

Risk Information

CVSS v2

Base Score: 7.8

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

Severity: High

CVSS v3

Base Score: 7.5

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