SB2026101353 - Remote code execution in Windows Shell

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Main Vulnerability Database SB2026101353

SB2026101353 - Remote code execution in Windows Shell

Published: October 13, 2026

Security Bulletin ID SB2026101353
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Command injection (CVE-ID: CVE-2026-96951) Exploited

CWE-ID: CWE-77 - Command injection

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass Mark of the Web (MOTW) defenses.

The vulnerability exists due to improper neutralization of special elements used in a command in Windows Shell when handling specially crafted files. A remote attacker can send a specially crafted file through email or instant messaging to bypass Mark of the Web (MOTW) defenses.

Exploitation requires convincing the targeted user to interact with attacker-controlled content; the user cannot be forced to view it.
Note, the vulnerability is being actively exploited in the wild.


Remediation

Install update from vendor's website.

References