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OpenAdvisories
High · 7.5 CVE-2026-121957 EUVD-2026-116957GHSA-r7gw-v2vh-25mh

FreeRDP before 3.32.2 Use-After-Free via RDPGFX ResetGraphics Race

Published Nov 4, 2026 · Updated Nov 4, 2026 · Assigned by VulnCheck

Description

FreeRDP before 3.32.2 contains a use-after-free vulnerability that allows malicious RDP servers to corrupt client memory by racing the RDPGFX ResetGraphics handler against the planar bitmap decoder. Attackers can send ResetGraphics while concurrently sending compressed bitmaps of 32 bpp or more to trigger heap use-after-free or out-of-bounds read/write on shared planar buffers.

Affected products

VendorProductAffectedFixed
FreeRDP FreeRDP < 3.32.2 3.32.2

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 3.32.2+dfsg-1 —
Debian 13 freerdp3 No fix yet —
Debian 12 freerdp2 No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS freerdp No fix yet —
Ubuntu 16.04 LTS freerdp No fix yet —
ReleasePackageFixed inAdvisory
RHEL 10 freerdp +5 2:3.32.2-1.el10_2 RHSA-2026:98598, RHSA-2026:94514

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 10 freerdp +5 2:3.32.2-1.el10_2 ALSA-2026:94514

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 10 freerdp +5 2:3.32.2-1.el10_2 RLSA-2026:98598

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 freerdp +5 2:3.33.0-3.amzn2023 ALAS2023-2026-3435

Advisories 6

References