Medium severity6.5NVD Advisory· Published Sep 15, 2026

CVE-2026-91963

Description

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Affected products

Freerdp/Freerdpllm-fuzzy
Range: <3.31.0

Patches

Vulnerability mechanics

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hw7p-5h2r-83gqnvd
www.vulncheck.com/advisories/freerdp-2.0.0-through-3.30.0-uninitialized-heap-memory-disclosure-via-urbdrcnvd

News mentions

No linked articles in our index yet.

cvss	0.423
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000