Vulnerability · Published Sep 15, 2026 · Assigned by VulnCheck

CVE-2026-91962FreeRDP before 3.31.0 Integer Overflow via audin Apple backends

Medium 6.3

In plain English

A medium-severity security flaw 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 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.3%top 82.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

FreeRDP before 3.31.0 contains an integer overflow in the audin Apple backends when processing FramesPerPacket values from MSG_SNDIN_OPEN messages. Attackers can supply crafted FramesPerPacket values that cause AudioQueueAllocateBuffer size computation to wrap, resulting in undersized buffer allocation and potential out-of-bounds access.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	freerdp2	no fix listed	DEBIAN-CVE-2026-91962
Debian:13	freerdp3	no fix listed	DEBIAN-CVE-2026-91962
Debian:14	freerdp3	3.31.0+dfsg-1	DEBIAN-CVE-2026-91962
Ubuntu:22.04:LTS	freerdp2	no fix listed	UBUNTU-CVE-2026-91962
Ubuntu:24.04:LTS	freerdp3	3.31.0+dfsg-0ubuntu0.24.04.1	UBUNTU-CVE-2026-91962
Ubuntu:26.04:LTS	freerdp3	3.31.0+dfsg-0ubuntu0.26.04.1	UBUNTU-CVE-2026-91962

Affected products (as reported)

Vendor	Product	Versions
FreeRDP	FreeRDP	0 – before 3.31.0

Weakness: CWE-131 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

References

GitHub Security Advisory (GHSA-f5p6-88mh-59vg) vendor-advisory
VulnCheck Advisory: FreeRDP before 3.31.0 Integer Overflow via audin Apple backends third-party-advisory