Reachable Assertion Affecting freerdp/freerdp package, versions [3.14.0,3.31.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-FREERDPFREERDP-21191270
- published18 Oct 2026
- disclosed15 Sept 2026
- creditUnknown
Introduced: 15 Sep 2026
CVE-2026-91951 (opens in a new tab)How to fix?
Upgrade freerdp/freerdp to version 3.31.0 or higher.
Overview
Affected versions of this package are vulnerable to Reachable Assertion via the urb_send_current_frame_number_result function. An attacker can cause a denial of service by sending a specially crafted 28-byte USB redirection message from a malicious RDP server, resulting in a 4-byte write past the allocated 16-byte buffer. This is only exploitable if verbose asserts are enabled.