Vulnerability Description
FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire format. Attackers can receive uninitialized heap memory including live pointers and GLib function addresses transmitted in the PDU, defeating heap ASLR and disclosing the GLib module base address.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/FreeRDP/FreeRDP/commit/483c9388119f06bac420d92053cff9ef94e83b
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r7jx-j9h7-j4xj
- https://www.vulncheck.com/advisories/freerdp-before-3.31.0-information-disclosur
FAQ
What is CVE-2026-91946?
CVE-2026-91946 is a vulnerability with a CVSS score of 6.5 (MEDIUM). FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire for...
How severe is CVE-2026-91946?
CVE-2026-91946 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-91946?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.