SB2026011383 - Privilege escalation in Microsoft Windows Remote Procedure Call Interface Definition Language (IDL)
Published: January 13, 2026
Security Bulletin ID
SB2026011383
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Double free (CVE-ID: CVE-2026-20832)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in Windows Remote Procedure Call Interface Definition Language (IDL). A local user can pass specially crafted data to the application, trigger double free error and gain elevated privileges on the target system.
Remediation
Install update from vendor's website.