Jan 2026: Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege V
CVE-2026-20832 Published on January 13, 2026
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
Weakness Type
What is a Double-free Vulnerability?
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. When a program calls free() twice with the same argument, the program's memory management data structures become corrupted. This corruption can cause the program to crash or, in some circumstances, cause two later calls to malloc() to return the same pointer. If malloc() returns the same value twice and the program later gives the attacker control over the data that is written into this doubly-allocated memory, the program becomes vulnerable to a buffer overflow attack.
CVE-2026-20832 has been classified to as a Double-free vulnerability or weakness.
Products Associated with CVE-2026-20832
Want to know whenever a new CVE is published for Microsoft products? stack.watch will email you.
Affected Versions
Microsoft Windows 10 Version 1607:- Version 10.0.14393.0 and below 10.0.14393.8783 is affected.
- Version 10.0.17763.0 and below 10.0.17763.8276 is affected.
- Version 10.0.19044.0 and below 10.0.19044.6809 is affected.
- Version 10.0.19045.0 and below 10.0.19045.6809 is affected.
- Version 10.0.22631.0 and below 10.0.22631.6491 is affected.
- Version 10.0.22631.0 and below 10.0.22631.6491 is affected.
- Version 10.0.26100.0 and below 10.0.26100.7623 is affected.
- Version 10.0.26200.0 and below 10.0.26200.7623 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8783 is affected.
- Version 10.0.14393.0 and below 10.0.14393.8783 is affected.
- Version 10.0.17763.0 and below 10.0.17763.8276 is affected.
- Version 10.0.17763.0 and below 10.0.17763.8276 is affected.
- Version 10.0.20348.0 and below 10.0.20348.4648 is affected.
- Version 10.0.25398.0 and below 10.0.25398.2092 is affected.
- Version 10.0.26100.0 and below 10.0.26100.32230 is affected.
- Version 10.0.26100.0 and below 10.0.26100.32230 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.