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OpenAdvisories
Low · 3.1 CVE-2026-91957 EUVD-2026-78633GHSA-h5f5-2qh4-2xjm

FreeRDP before 3.31.0 Use-After-Free via smartcard worker

Published Sep 15, 2026 · Updated Sep 17, 2026 · Assigned by VulnCheck

Description

FreeRDP before 3.31.0 contains a use-after-free vulnerability in the smartcard RDPDR device handler when worker thread creation fails after device registration. Attackers can trigger thread creation failure during channel setup to cause device pointer deallocation while devman retains a reference, leading to crash or code execution.

Affected products

VendorProductAffectedFixed
FreeRDP FreeRDP < 3.31.0 3.31.0

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 freerdp3 3.31.0+dfsg-1 —
Debian 13 freerdp3 No fix yet —
Debian 12 freerdp2 No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS freerdp3 3.31.0+dfsg-0ubuntu0.26.04.1 —
Ubuntu 24.04 LTS freerdp3 3.31.0+dfsg-0ubuntu0.24.04.1 —
Ubuntu 22.04 LTS freerdp2 No fix yet —
Ubuntu 18.04 LTS freerdp No fix yet —
Ubuntu 16.04 LTS freerdp No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS freerdp2 No fix yet —
Ubuntu Pro 20.04 LTS freerdp2 No fix yet —
Ubuntu Pro 18.04 LTS freerdp2 No fix yet —

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 freerdp +5 2:3.31.0-1.amzn2023 ALAS2023-2026-2142
Amazon Linux 2 freerdp +4 2:2.11.7-1.amzn2.0.16 ALAS2-2026-3938

Advisories 3

References