CVE-2025-54574
critical · 9.3Squid 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.
9.3
CVSS
22.7%
EPSS (exploit prob.)
98th
EPSS percentile
2025-08-01
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H
Weaknesses
CWE-122CWE-787
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| squid-cache | squid | < 6.4 |
Check a specific version with /api/v1/cve/match.
References
- https://github.com/squid-cache/squid/commit/a27bf4b84da23594150c7a86a23435df0b35b988
- https://github.com/squid-cache/squid/releases/tag/SQUID_6_4
- https://github.com/squid-cache/squid/security/advisories/GHSA-w4gv-vw3f-29g3
- http://www.openwall.com/lists/oss-security/2025/11/05/5
- https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2025-54574