CVE-2025-54574 | THREATINT

Description

Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.

PUBLISHED Reserved 2025-07-25 | Published 2025-08-01 | Updated 2025-11-05 | Assigner GitHub_M

CRITICAL: 9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H

Problem types

CWE-122: Heap-based Buffer Overflow

Product status

< 6.4

affected

References

lists.debian.org/debian-lts-announce/2025/09/msg00027.html

www.openwall.com/lists/oss-security/2025/11/05/5

github.com/.../squid/security/advisories/GHSA-w4gv-vw3f-29g3

github.com/...ommit/a27bf4b84da23594150c7a86a23435df0b35b988

github.com/squid-cache/squid/releases/tag/SQUID_6_4

cve.org (CVE-2025-54574)

nvd.nist.gov (CVE-2025-54574)

Download JSON