CVE-2025-54574 — Squid's URN Handling can lead to Buffer Overflow
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 …
Published: 2025-08-01 · CVSS: 9.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7