What is GHSA-mh85-h6g9-mfcc?

GHSA-mh85-h6g9-mfcc is a security advisory published by GitHub Security Advisories with High severity. FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's...

Which CVE IDs does GHSA-mh85-h6g9-mfcc cover?

GHSA-mh85-h6g9-mfcc covers the following CVE IDs: CVE-2026-91956. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mh85-h6g9-mfcc?

GHSA-mh85-h6g9-mfcc has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-mh85-h6g9-mfccHighCVSS 6.5

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's...

Vendor

GitHub Security Advisories

Published

September 15, 2026

Last Modified

September 15, 2026

🔗 CVE IDs covered (1)

CVE-2026-91956 →

📋 Description

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted InterfaceNumber values to read past allocated heap memory and crash the client.

🔗 References (4)

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hg4r-vv53-vwf8
https://nvd.nist.gov/vuln/detail/CVE-2026-91956
https://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-urbdrc
https://github.com/advisories/GHSA-mh85-h6g9-mfcc