CVE-2026-96951

high

Description

Improper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.

From the Tenable Blog

October 2026 Microsoft Patch Tuesday | Tenable®

October 2026 Microsoft Patch Tuesday | Tenable®

Published: 2026-10-13

Microsoft patched 1,407 CVEs in October, its largest Patch Tuesday release to date, including two zero-day flaws, one exploited in the wild: CVE-2026-96951.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96951

https://www.malwarebytes.com/blog/bugs/2026/10/update-windows-record-patch-tuesday-fixes-flaw-already-under-attack

https://www.infosecurity-magazine.com/news/microsoft-patch-tuesday-record-1/

https://www.helpnetsecurity.com/2026/10/14/microsoft-patch-tuesday-cve-2026-96951-motw-bypass/

https://therecord.media/new-ivanti-microsoft-bugs-exploitation

https://securityaffairs.com/200965/hacking/u-s-cisa-adds-microsoft-windows-shell-flaw-to-its-known-exploited-vulnerabilities-catalog.html

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

https://www.cisa.gov/news-events/alerts/2026/10/13/cisa-adds-two-known-exploited-vulnerabilities-catalog

https://krebsonsecurity.com/2026/10/microsoft-patches-more-than-1400-security-flaws/

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96951

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-100274

Details

Source: Mitre, NVD

Published: 2026-10-13

Updated: 2026-10-29

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 10

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

Severity: Critical

CVSS v3

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.09813