CVE-2024-32041: FreeRDP OutOfBound Read in zgfx_decompress_segment

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-04-22 · updated 2026-06-17
Weakness: CWE-125

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients that use a version of FreeRDP prior to 3.5.0 or 2.11.6 are vulnerable to out-of-bounds read. Versions 3.5.0 and 2.11.6 patch the issue. As a workaround, deactivate `/gfx` (on by default, set `/bpp` or `/rfx` options instead.

Affected products

Fedoraproject Fedora: 38, 39, 40
FreeRDP: before 2.11.6; from 3.0.0 before 3.5.0 — fixed in 2.11.6, 3.5.0

How to fix

Upgrade to a fixed version: FreeRDP 2.11.6, 3.5.0. Check the vendor advisory for mitigations.

References

https://github.com/FreeRDP/FreeRDP/pull/10077
https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6
https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5r4p-mfx2-m44r
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SIS6NUNLUBOV4CPCSWKDE6T6C2W3WTR/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PX3U6YPZQ7PEJBVKSBUOLWVH7DHROHY5/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/
https://github.com/FreeRDP/FreeRDP/pull/10077
https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6
https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5r4p-mfx2-m44r

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