Vulnerability · Published Nov 3, 2026 · Assigned by VulnCheck

CVE-2026-121387FreeRDP 2.0.0 before 3.32.2 Out-of-Bounds Read via GSM610/WAV49 Decoder

Medium 4.3

In plain English

A medium-severity out-of-bounds read in FreeRDP from FreeRDP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 85.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	freerdp2	no fix listed	DEBIAN-CVE-2026-121387
Debian:13	freerdp3	no fix listed	DEBIAN-CVE-2026-121387
Debian:14	freerdp3	3.32.2+dfsg-1	DEBIAN-CVE-2026-121387
Ubuntu:22.04:LTS	freerdp2	no fix listed	UBUNTU-CVE-2026-121387
Ubuntu:24.04:LTS	freerdp3	no fix listed	UBUNTU-CVE-2026-121387
Ubuntu:26.04:LTS	freerdp3	no fix listed	UBUNTU-CVE-2026-121387
Ubuntu:26.10	freerdp3	no fix listed	UBUNTU-CVE-2026-121387

Affected products (as reported)

Vendor	Product	Versions
FreeRDP	FreeRDP	2.0.0 – before 3.32.2

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References

GitHub Security Advisory (GHSA-wg7g-gx9g-r96c) vendor-advisory
VulnCheck Advisory: FreeRDP 2.0.0 before 3.32.2 Out-of-Bounds Read via GSM610/WAV49 Decoder third-party-advisory