---
id: CVE-2025-32909
title: A flaw was found in libsoup
summary: >-
  A flaw was found in libsoup. SoupContentSniffer may be vulnerable to a NULL
  pointer dereference in the sniff_mp4 function. The HTTP server may cause the
  libsoup client to crash.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-476
vendor: Red Hat
product: libsoup
affected:
  - libsoup < 3.6.2
  - mingw-freetype (all versions)
  - spice-client-win (all versions)
  - libsoup3
  - libsoup
  - libsoup
  - libsoup (all versions)
  - libsoup (all versions)
published: '2025-04-14'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T18:17:11.720'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-32909'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2025:8292'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-32909'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2359353'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/libsoup/-/issues/431'
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2025/04/msg00036.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-32909.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2025-32909'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-32909'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2025-04-14T15:33:27.428169Z'
epss: 0.0052
epssPercentile: 0.41665
ingestedAt: '2026-06-26T16:43:13.595Z'
patched:
  - enterprise_linux_appstream_v_8
  - enterprise_linux_crb_v_8
---

## Overview

A flaw was found in libsoup. SoupContentSniffer may be vulnerable to a NULL pointer dereference in the sniff_mp4 function. The HTTP server may cause the libsoup client to crash.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2025:8292** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2025-05-29 · [advisory](https://access.redhat.com/errata/RHSA-2025:8292)
- **Red Hat VEX** · Moderate · affected: 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 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-32909.json)