CVE catalog

CVE-2011-1947

fetchmail: CVE-2011-1947

Severity: Low
Published: Jun 2, 2011, 7:55:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.55% · Oct 25, 2026

fetchmail 5.9.9 through 6.3.19 does not properly limit the wait time after issuing a (1) STARTTLS or (2) STLS request, which allows remote servers to cause a denial of service (application hang) by acknowledging the request but not sending additional packets.

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	fetchmail	sid	`6.6.9-1`	fixed
Debian	fetchmail	forky	`6.6.9-1`	fixed
Debian	fetchmail	trixie	`6.4.39-1`	fixed
Debian	fetchmail	bookworm	`6.4.37-1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	fetchmail	source	sid	`6.3.22-1`	unimportant	Not reported	Not reported
Debian	fetchmail	source	forky	`6.3.22-1`	unimportant	Not reported	Not reported
Debian	fetchmail	source	trixie	`6.3.22-1`	unimportant	Not reported	Not reported
Debian	fetchmail	source	bookworm	`6.3.22-1`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[fetchmail]Fixed
Details (2)
- 6.4.37-1 · amd64 · bookworm
  Fixed · Fixed: 6.3.22-1
  dsa · fetchmail · debian · bookworm; dsa · fetchmail · debian · 12
- 6.4.37-1 · arm64 · bookworm
  Fixed · Fixed: 6.3.22-1
  dsa · fetchmail · debian · bookworm; dsa · fetchmail · debian · 12

[Debian 13 (Trixie)]

[fetchmail]Fixed
Source package: [fetchmail]
Details (2)
- 6.4.39-1 · amd64 · trixie
  Fixed · Fixed: 6.3.22-1
  dsa · fetchmail · debian · 13
- 6.4.39-1+b2 · arm64 · trixie
  Fixed · Fixed: 6.3.22-1
  dsa · fetchmail · debian · 13

Observed: Oct 23, 2026, 5:05:25 PM UTC

References

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