CVE-2025-32052: Libsoup: heap buffer overflow in sniff_unknown()

Overview

Severity
Medium (CVSS 6.5)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Exploit Status
Not Exploited
Patch Tuesday
2025-Apr
Released
2025-05-06
Last Updated
2026-02-18
EPSS Score
1.11% (percentile: 78.2%)

FAQ

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

Affected Products (4)

Open Source Software

  • cbl2 libsoup 3.0.4-6 on CBL Mariner 2.0

Other

  • 19401-16823
  • 19402-17084

Mariner

  • azl3 libsoup 3.4.4-6 on Azure Linux 3.0

Revision History

  • 2025-05-06: Information published.
  • 2026-02-18: Information published.