CVE-2026-110837: FreeRDP 2.0.0 before 3.32.0 Heap Buffer Overflow via MP3 Audio Decoding

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-10-14 · updated 2026-10-23
Weakness: CWE-122

Description

FreeRDP 2.0.0 before 3.32.0, when built with WITH_LAME=ON and WITH_DSP_FFMPEG=OFF, has a heap-based buffer overflow in freerdp_dsp_decode_mp3 because the right-channel PCM pointer is offset by a byte count treated as short elements. A malicious RDP server can send MP3 audio over rdpsnd so decoded samples cross the heap allocation, crashing the client.

Affected products

FreeRDP: from 2.0.0 before 3.32.0 — fixed in 3.32.0

How to fix

Upgrade to a fixed version: FreeRDP 3.32.0. Check the vendor advisory for mitigations.

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-52xc-5973-w5vv
https://www.vulncheck.com/advisories/freerdp-2.0.0-before-3.32.0-heap-buffer-overflow-via-mp3-audio-decoding
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-52xc-5973-w5vv

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