MEDIUM

CVE-2026-91951

2026-09-15 CVSS v3.1

CVSS

6.5

Description

FreeRDP versions before 3.31.0 contain an out-of-bounds write vulnerability in the urbdrc client channel's urb_send_current_frame_number_result() function. A malicious RDP server can send a crafted 28-byte USB redirection message to trigger a 4-byte write past the allocated 16-byte buffer, causing denial of service when verbose asserts are enabled.

Weakness (CWE)

CWE-617 Reachable Assertion

EPSS Score

0.35%

Probability of exploitation in next 30 days

28.1th percentile

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h5w2-q35j-443h https://www.vulncheck.com/advisories/freerdp-3.14.0-through-3.30.0-out-of-bounds-write-via-urbdrc

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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