CVE catalog

CVE-2013-1762

stunnel4: CVE-2013-1762

Severity: Medium
Published: Mar 8, 2013, 6:55:01 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.93% · Oct 25, 2026

stunnel 4.21 through 4.54, when CONNECT protocol negotiation and NTLM authentication are enabled, does not correctly perform integer conversion, which allows remote proxy servers to execute arbitrary code via a crafted request that triggers a buffer overflow.

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	stunnel4	trixie	`3:5.74-2`	fixed
Debian	stunnel4	bookworm	`3:5.68-2+deb12u1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	stunnel4	source	trixie	`3:4.53-1.1`	not yet assigned	Not reported	[702267]
Debian	stunnel4	source	bookworm	`3:4.53-1.1`	not yet assigned	Not reported	[702267]

[Debian bug #702267]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[stunnel4]Fixed
Details (2)
- 3:5.68-2+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 3:4.53-1.1
  dsa · stunnel4 · debian · bookworm; dsa · stunnel4 · debian · 12
- 3:5.68-2+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 3:4.53-1.1
  dsa · stunnel4 · debian · bookworm; dsa · stunnel4 · debian · 12

[Debian 13 (Trixie)]

[stunnel4]Fixed
Details (2)
- 3:5.74-2 · amd64 · trixie
  Fixed · Fixed: 3:4.53-1.1
  dsa · stunnel4 · debian · 13
- 3:5.74-2 · arm64 · trixie
  Fixed · Fixed: 3:4.53-1.1
  dsa · stunnel4 · debian · 13

Observed: Oct 23, 2026, 5:07:21 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]