SB2026021058 - Remote code execution in Microsoft MSHTML Framework
Published: February 10, 2026
Security Bulletin ID
SB2026021058
Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Protection Mechanism Failure (CVE-ID: CVE-2026-21513)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient implementation of security measures. An attacker can trick the the victim into clicking on a specially crafted link or on a shortcut (.lnk) file and execute arbitrary code on the system.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.