by Kastro
Paper/Archive/CVE-2026-31885

CVE-2026-31885

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

EPSS 0.3%public exploitCVSS 9.4
critical.is priorityof 100
42
CVSS 9.4 (NVD)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 20.5.205 × 204.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
FreeRDP< 3.24.0–CNA

Scores by source

NVD9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
GitHub_M (CNA)6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: partial

References

exploitgithub.com/FreeRDP/FreeRDP/security/advisories/GHSA-h23r-3988-3wf3refgithub.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8