CVE catalog

CVE-2011-2940

stunnel4: CVE-2011-2940

Severity: Medium
Published: Aug 25, 2011, 2:22:47 PM UTC
Source: [NVD] · [CVE record]
EPSS: 5.71% · Oct 25, 2026

stunnel 4.40 and 4.41 might allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

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	`3:4.42-1`	not yet assigned	Not reported	[638758]
Debian	stunnel4	source	bookworm	`3:4.42-1`	not yet assigned	Not reported	[638758]

[Debian bug #638758]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[stunnel4]Fixed
Details (2)
- 3:5.68-2+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 3:4.42-1
  dsa · stunnel4 · debian · bookworm; dsa · stunnel4 · debian · 12
- 3:5.68-2+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 3:4.42-1
  dsa · stunnel4 · debian · bookworm; dsa · stunnel4 · debian · 12

[Debian 13 (Trixie)]

[stunnel4]Fixed
Details (2)
- 3:5.74-2 · amd64 · trixie
  Fixed · Fixed: 3:4.42-1
  dsa · stunnel4 · debian · 13
- 3:5.74-2 · arm64 · trixie
  Fixed · Fixed: 3:4.42-1
  dsa · stunnel4 · debian · 13

Observed: Oct 23, 2026, 5:05:31 PM UTC

References

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