---
id: CVE-2026-91962
title: >-
  FreeRDP before 3.31.0 contains an integer overflow in the audin Apple backends
  when processing FramesPerPacket values from MSG_SNDIN_OPEN messages
summary: >-
  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
  s…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-131
  - CWE-787
vendor: freerdp
product: freerdp
affected:
  - freerdp < 3.31.0
patched:
  - freerdp 3.31.0
published: '2026-09-15'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T20:04:04.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91962'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f5p6-88mh-59vg'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-before-3.31.0-integer-overflow-via-audin-apple-backends
    label: disclosure@vulncheck.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91962.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-91962'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2533933'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-91962'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91962'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00261
epssPercentile: 0.16001
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-17T14:58:30.339934Z'
ingestedAt: '2026-09-15T15:39:12.915Z'
---

## Overview

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

- `freerdp < 3.31.0`

## Remediation

Upgrade past the affected range:

- `freerdp 3.31.0`

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91962.json)