Out-of-bounds Read in Freerdp
CVE-2026-121387
FreeRDP 2.0.0 before 3.32.2 contains an out-of-bounds read vulnerability in freerdp_dsp_decode_gsm610 that allows malicious RDP servers to read past audio buffers by sending truncated GSM610 frames. Attackers can negotiate GSM610 on rdpsnd and send a WAVE2 message shorter than a 33- or 32-byte WAV49 frame to crash the client.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wg7g-gx9g-r96c (vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/freerdp-2.0.0-before-3.32.2-out-of-bounds-read-via… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-121387?
- CVE-2026-121387 is a medium-severity vulnerability in Freerdp, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2026-11-03.
- How severe is CVE-2026-121387?
- Medium severity. CVSS v3 base score is 4.3 out of 10.