CVE catalog

CVE-2025-21311

squid: CVE-2025-21311

Severity: Medium
Published: Jan 14, 2025, 6:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.26% · Oct 25, 2026

Windows NTLM V1 Elevation of Privilege Vulnerability

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	squid	sid	`7.7-1`	fixed
Debian	squid	forky	`7.7-1`	fixed
Debian	squid	trixie	`6.13-2+deb13u3`	vulnerable
Debian	squid	trixie-security	`6.13-2+deb13u2`	vulnerable
Debian	squid	bookworm	`5.7-2+deb12u5`	vulnerable
Debian	squid	bookworm-security	`5.7-2+deb12u6`	vulnerable
Ubuntu	squid3	pro	`3.5.23-5ubuntu1`	vulnerable
Ubuntu	squid3	pro	`3.5.23-5ubuntu2`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.1`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.2`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.3`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.4`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.5`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.6`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.7`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.8`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.9`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.10`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.11`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.12`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.13`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.14`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.14+esm1`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.14+esm2`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.14+esm3`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.14+esm4`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.14+esm5`	vulnerable
Ubuntu	squid3	pro	`3.5.27-1ubuntu1.14+esm6`	vulnerable
Ubuntu	squid	pro	`4.8-1ubuntu2`	vulnerable
Ubuntu	squid	pro	`4.8-1ubuntu3`	vulnerable
Ubuntu	squid	pro	`4.9-2ubuntu1`	vulnerable
Ubuntu	squid	pro	`4.9-2ubuntu2`	vulnerable
Ubuntu	squid	pro	`4.9-2ubuntu3`	vulnerable
Ubuntu	squid	pro	`4.9-2ubuntu4`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.1`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.2`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.3`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.4`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.5`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.6`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.7`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.8`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.9`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.10`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.11`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.12`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.13`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.13+esm1`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.13+esm2`	vulnerable
Ubuntu	squid	pro	`4.10-1ubuntu1.13+esm3`	vulnerable
Ubuntu	squid	22.04	`4.13-10ubuntu5`	vulnerable
Ubuntu	squid	22.04	`5.2-1ubuntu1`	vulnerable
Ubuntu	squid	22.04	`5.2-1ubuntu3`	vulnerable
Ubuntu	squid	22.04	`5.2-1ubuntu4`	vulnerable
Ubuntu	squid	22.04	`5.2-1ubuntu4.1`	vulnerable
Ubuntu	squid	22.04	`5.2-1ubuntu4.2`	vulnerable
Ubuntu	squid	22.04	`5.2-1ubuntu4.3`	vulnerable
Ubuntu	squid	22.04	`5.7-0ubuntu0.22.04.1`	vulnerable
Ubuntu	squid	22.04	`5.7-0ubuntu0.22.04.2`	vulnerable
Ubuntu	squid	22.04	`5.7-0ubuntu0.22.04.3`	vulnerable
Ubuntu	squid	22.04	`5.7-0ubuntu0.22.04.4`	vulnerable
Ubuntu	squid	22.04	`5.9-0ubuntu0.22.04.1`	vulnerable
Ubuntu	squid	22.04	`5.9-0ubuntu0.22.04.2`	vulnerable
Ubuntu	squid	22.04	`5.9-0ubuntu0.22.04.3`	vulnerable
Ubuntu	squid	22.04	`5.9-0ubuntu0.22.04.4`	vulnerable
Ubuntu	squid	22.04	`5.9-0ubuntu0.22.04.5`	vulnerable
Ubuntu	squid	22.04	`5.9-0ubuntu0.22.04.7`	vulnerable
Ubuntu	squid	22.04	`5.9-0ubuntu0.22.04.8`	vulnerable
Ubuntu	squid	24.04	`6.1-2ubuntu1`	vulnerable
Ubuntu	squid	24.04	`6.1-2ubuntu2`	vulnerable
Ubuntu	squid	24.04	`6.5-1ubuntu1`	vulnerable
Ubuntu	squid	24.04	`6.5-1ubuntu2`	vulnerable
Ubuntu	squid	24.04	`6.5-1ubuntu3`	vulnerable
Ubuntu	squid	24.04	`6.6-1ubuntu4`	vulnerable
Ubuntu	squid	24.04	`6.6-1ubuntu5`	vulnerable
Ubuntu	squid	24.04	`6.6-1ubuntu5.1`	vulnerable
Ubuntu	squid	24.04	`6.10-0ubuntu0.24.04.1`	vulnerable
Ubuntu	squid	24.04	`6.13-0ubuntu0.24.04.1`	vulnerable
Ubuntu	squid	24.04	`6.13-0ubuntu0.24.04.2`	vulnerable
Ubuntu	squid	24.04	`6.13-0ubuntu0.24.04.3`	vulnerable
Ubuntu	squid	24.04	`6.14-0ubuntu0.24.04.1`	vulnerable
Ubuntu	squid	24.04	`6.14-0ubuntu0.24.04.2`	vulnerable
Ubuntu	squid	24.04	`6.14-0ubuntu0.24.04.4`	vulnerable
Ubuntu	squid	24.04	`6.14-0ubuntu0.24.04.5`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	squid	source	sid	`7.1-1`	not yet assigned	Not reported	Not reported
Debian	squid	source	forky	`7.1-1`	not yet assigned	Not reported	Not reported
Debian	squid	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	squid	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

Notes

[trixie] squid: Minor issue, generic protocol flaw being deprecated [bookworm] squid: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[squid]Affected
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u5 · arm64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
[squid-cgi]Affected
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u5 · arm64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
[squidclient]Affected
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u5 · arm64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
[squid-common]Affected
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · all · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u5 · all · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · all · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · all · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
[squid-openssl]Affected
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u5 · arm64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
[squid-purge]Affected
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u5 · arm64 · bookworm
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Affected
  dsa · squid · debian · bookworm; dsa · squid · debian · 12

[Debian 13 (Trixie)]

[squid]Affected
Details (4)
- 6.13-2+deb13u2 · amd64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · amd64 · trixie-security
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie-security
  Affected
  dsa · squid · debian · 13
[squid-cgi]Affected
Source package: [squid]
Details (4)
- 6.13-2+deb13u2 · amd64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · amd64 · trixie-security
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie-security
  Affected
  dsa · squid · debian · 13
[squidclient]Affected
Source package: [squid]
Details (4)
- 6.13-2+deb13u2 · amd64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · amd64 · trixie-security
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie-security
  Affected
  dsa · squid · debian · 13
[squid-common]Affected
Source package: [squid]
Details (4)
- 6.13-2+deb13u2 · all · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · all · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · all · trixie-security
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · all · trixie-security
  Affected
  dsa · squid · debian · 13
[squid-openssl]Affected
Source package: [squid]
Details (4)
- 6.13-2+deb13u2 · amd64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · amd64 · trixie-security
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie-security
  Affected
  dsa · squid · debian · 13
[squid-purge]Affected
Source package: [squid]
Details (4)
- 6.13-2+deb13u2 · amd64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · amd64 · trixie-security
  Affected
  dsa · squid · debian · 13
- 6.13-2+deb13u2 · arm64 · trixie-security
  Affected
  dsa · squid · debian · 13

Observed: Oct 27, 2026, 6:38:00 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]