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CVE-2025-54574

Fixed in a distro release EPSS 24%CVSS 9.3

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 2025-08-01 · CVE record · OSV

Products: squid-cache squid

Distro releases

ReleasePackageFixed in
Debian:11squid4.13-10+deb11u5
Debian:12squid5.7-2+deb12u3
Debian:13squid6.5-1
Debian:14squid6.5-1
Red Hat:enterprise_linux:8libecap0:1.0.1-2.module+el8.9.0+19703+a1da7223
Red Hat:enterprise_linux:8libecap-debuginfo0:1.0.1-2.module+el8.9.0+19703+a1da7223
Red Hat:enterprise_linux:8libecap-debugsource0:1.0.1-2.module+el8.9.0+19703+a1da7223
Red Hat:enterprise_linux:8libecap-devel0:1.0.1-2.module+el8.9.0+19703+a1da7223
Red Hat:enterprise_linux:8squid7:4.15-7.module+el8.9.0+20806+014d88aa.3
Red Hat:enterprise_linux:8squid-debuginfo7:4.15-7.module+el8.9.0+20806+014d88aa.3
Red Hat:enterprise_linux:8squid-debugsource7:4.15-7.module+el8.9.0+20806+014d88aa.3
Red Hat:enterprise_linux:9squid7:5.5-6.el9_3.2
Red Hat:enterprise_linux:9squid-debuginfo7:5.5-6.el9_3.2
Red Hat:enterprise_linux:9squid-debugsource7:5.5-6.el9_3.2
Red Hat:rhel_aus:8.2libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.2libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.2libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.2libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.2squid7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_aus:8.2squid-debuginfo7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_aus:8.2squid-debugsource7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_aus:8.4libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.4libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.4libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.4libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_aus:8.4squid7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_aus:8.4squid-debuginfo7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_aus:8.4squid-debugsource7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_e4s:8.2libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.2libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.2libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.2libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.2squid7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_e4s:8.2squid-debuginfo7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_e4s:8.2squid-debugsource7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_e4s:8.4libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.4libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.4libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.4libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_e4s:8.4squid7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_e4s:8.4squid-debuginfo7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_e4s:8.4squid-debugsource7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_els:7squid7:3.5.20-17.el7_9.14
Red Hat:rhel_els:7squid-debuginfo7:3.5.20-17.el7_9.14
Red Hat:rhel_els:7squid-migration-script7:3.5.20-17.el7_9.14
Red Hat:rhel_els:7squid-sysvinit7:3.5.20-17.el7_9.14
Red Hat:rhel_eus:8.6libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.6libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.6libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.6libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.6squid7:4.15-3.module+el8.6.0+21069+a1561e3d.4
Red Hat:rhel_eus:8.6squid-debuginfo7:4.15-3.module+el8.6.0+21069+a1561e3d.4
Red Hat:rhel_eus:8.6squid-debugsource7:4.15-3.module+el8.6.0+21069+a1561e3d.4
Red Hat:rhel_eus:8.8libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.8libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.8libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.8libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_eus:8.8squid7:4.15-6.module+el8.8.0+21068+0ecbc070.3
Red Hat:rhel_eus:8.8squid-debuginfo7:4.15-6.module+el8.8.0+21068+0ecbc070.3
Red Hat:rhel_eus:8.8squid-debugsource7:4.15-6.module+el8.8.0+21068+0ecbc070.3
Red Hat:rhel_eus:9.0squid7:5.2-1.el9_0.4
Red Hat:rhel_eus:9.0squid-debuginfo7:5.2-1.el9_0.4
Red Hat:rhel_eus:9.0squid-debugsource7:5.2-1.el9_0.4
Red Hat:rhel_eus:9.2squid7:5.5-5.el9_2.3
Red Hat:rhel_eus:9.2squid-debuginfo7:5.5-5.el9_2.3
Red Hat:rhel_eus:9.2squid-debugsource7:5.5-5.el9_2.3
Red Hat:rhel_tus:8.2libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.2libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.2libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.2libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.2squid7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_tus:8.2squid-debuginfo7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_tus:8.2squid-debugsource7:4.4-8.module+el8.2.0+21173+22259b09.7
Red Hat:rhel_tus:8.4libecap0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.4libecap-debuginfo0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.4libecap-debugsource0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.4libecap-devel0:1.0.1-2.module+el8.1.0+4044+36416a77
Red Hat:rhel_tus:8.4squid7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_tus:8.4squid-debuginfo7:4.11-4.module+el8.4.0+21174+3894a031.6
Red Hat:rhel_tus:8.4squid-debugsource7:4.11-4.module+el8.4.0+21174+3894a031.6
Ubuntu:20.04:LTSsquid4.10-1ubuntu1.12
Ubuntu:22.04:LTSsquid5.7-0ubuntu0.22.04.4
Ubuntu:Pro:16.04:LTSsquid3no fix
Ubuntu:Pro:18.04:LTSsquid3no fix