Advisory severityMedium6.5Red Hat Linux

Medium [CVE-2026-91951] Denial of Service via out-of-bounds write in urbdrc client channel

This medium-severity Red Hat Linux advisory covers CVE-2026-91951; related products: Red Hat Enterprise Linux 10, Red Hat package: freerdp.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-91951 Source published Sep 15, 2026Source updated Sep 15, 2026

VulniPulse record published Sep 16, 2026Record updated Sep 23, 2026

CVE-2026-91951

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Summary

Denial of Service via out-of-bounds write in urbdrc client channel. Red Hat rates this moderate (CVSS 6.5).

Weakness: CWE-787.

Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: freerdp.

Affected versions

< 3.31.0

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

To mitigate this issue, disable the USB redirection (urbdrc) client channel when connecting to untrusted RDP servers. This can typically be achieved by using the `/d:urbdrc` option with `xfreerdp` or similar FreeRDP client commands. Disabling this channel will prevent USB device redirection functionality.

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Discussion(0)

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