{"cve":"CVE-2025-54574","nvd":{"published":"2025-08-01T18:15:55.390","modified":"2026-06-17T09:40:20.177","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-787","CWE-122"],"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"],"products":["squid-cache:squid"],"source":"nvd","synced_at":"2026-10-19T22:05:46.678065081+00:00"},"epss":{"cve":"CVE-2025-54574","score":0.23965,"percentile":0.97839,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}