CVE-2026-31885

FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks

State: Published
Severity: 6.5 Medium
Published: Mar 13, 2026
Updated: Mar 16, 2026
Reserved: Mar 9, 2026

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in MS-ADPCM and IMA-ADPCM decoders due to unchecked predictor and step_index values from input data. This vulnerability is fixed in 3.24.0.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
FreeRDPFreeRDP	< 3.24.0Affected

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h23r-3988-3wf3
https://github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8

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