CVE catalog

CVE-2025-63938

tinyproxy: CVE-2025-63938

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Published: Nov 26, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.26% · Oct 25, 2026

Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.

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	tinyproxy	sid	`1.11.3-1`	fixed
Debian	tinyproxy	forky	`1.11.3-1`	fixed
Debian	tinyproxy	trixie	`1.11.2-1`	vulnerable
Debian	tinyproxy	bookworm	`1.11.1-2.1+deb12u1`	vulnerable
Debian	tinyproxy	bookworm-security	`1.11.1-2.1+deb12u1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	tinyproxy	source	sid	`1.11.3-1`	not yet assigned	Not reported	[1121539]
Debian	tinyproxy	source	forky	`1.11.3-1`	not yet assigned	Not reported	[1121539]
Debian	tinyproxy	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1121539]
Debian	tinyproxy	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1121539]

[Debian bug #1121539]

Notes

[trixie] tinyproxy: Minor issue [bookworm] tinyproxy: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[tinyproxy]Affected
Details (6)
- 1.11.1-2.1+deb12u1 · all · bookworm
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.1-2.1+deb12u1 · all · bookworm
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.2-1~bpo12+1 · all · bookworm-backports
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.2-1~bpo12+1 · all · bookworm-backports
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.1-2.1+deb12u1 · all · bookworm-security
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.1-2.1+deb12u1 · all · bookworm-security
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
[tinyproxy-bin]Affected
Source package: [tinyproxy]
Details (6)
- 1.11.1-2.1+deb12u1 · amd64 · bookworm
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.1-2.1+deb12u1 · arm64 · bookworm
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.2-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.2-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.1-2.1+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12
- 1.11.1-2.1+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · tinyproxy · debian · bookworm; dsa · tinyproxy · debian · 12

[Debian 13 (Trixie)]

[tinyproxy]Affected
Details (4)
- 1.11.2-1 · all · trixie
  Affected
  dsa · tinyproxy · debian · 13
- 1.11.2-1 · all · trixie
  Affected
  dsa · tinyproxy · debian · 13
- 1.11.3-1~bpo13+1 · all · trixie-backports
  Affected
  dsa · tinyproxy · debian · 13
- 1.11.3-1~bpo13+1 · all · trixie-backports
  Affected
  dsa · tinyproxy · debian · 13
[tinyproxy-bin]Affected
Source package: [tinyproxy]
Details (4)
- 1.11.2-1 · amd64 · trixie
  Affected
  dsa · tinyproxy · debian · 13
- 1.11.2-1+b1 · arm64 · trixie
  Affected
  dsa · tinyproxy · debian · 13
- 1.11.3-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · tinyproxy · debian · 13
- 1.11.3-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · tinyproxy · debian · 13

Observed: Oct 24, 2026, 8:33:49 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]