CVE catalog

CVE-2021-26676

connman: CVE-2021-26676

Severity: Medium · CVSS 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: Feb 8, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.16% · Oct 25, 2026

gdhcp in ConnMan before 1.39 could be used by network-adjacent attackers to leak sensitive stack information, allowing further exploitation of bugs in gdhcp.

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	connman	sid	`2.0-2`	fixed
Debian	connman	forky	`2.0-2`	fixed
Debian	connman	trixie	`1.44-3`	fixed
Debian	connman	bookworm	`1.41-3`	fixed
Ubuntu	connman	pro	`1.35-1`	vulnerable
Ubuntu	connman	pro	`1.35-2`	vulnerable
Ubuntu	connman	pro	`1.35-6`	vulnerable
Ubuntu	connman	pro	`1.35-6ubuntu0.1~esm1`	fixed
Ubuntu	connman	20.04	`1.36-2build1`	vulnerable
Ubuntu	connman	20.04	`1.36-2ubuntu0.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	connman	source	sid	`1.36-2.1`	not yet assigned	Not reported	Not reported
Debian	connman	source	forky	`1.36-2.1`	not yet assigned	Not reported	Not reported
Debian	connman	source	trixie	`1.36-2.1`	not yet assigned	Not reported	Not reported
Debian	connman	source	bookworm	`1.36-2.1`	not yet assigned	Not reported	Not reported
Ubuntu	connman	deb	pro	`1.35-6ubuntu0.1~esm1`	Not reported	UBUNTU-CVE-2021-26676	Not reported
Ubuntu	connman	deb	20.04	`1.36-2ubuntu0.1`	Not reported	UBUNTU-CVE-2021-26676	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[connman]Fixed
Details (2)
- 1.41-3 · amd64 · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12
- 1.41-3 · arm64 · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12
[connman-dev]Fixed
Source package: [connman]
Details (2)
- 1.41-3 · amd64 · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12
- 1.41-3 · arm64 · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12
[connman-doc]Fixed
Source package: [connman]
Details (2)
- 1.41-3 · all · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12
- 1.41-3 · all · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12
[connman-vpn]Fixed
Source package: [connman]
Details (2)
- 1.41-3 · amd64 · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12
- 1.41-3 · arm64 · bookworm
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · bookworm; dsa · connman · debian · 12

[Debian 13 (Trixie)]

[connman]Fixed
Details (2)
- 1.44-3 · amd64 · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
- 1.44-3 · arm64 · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
[connman-dev]Fixed
Source package: [connman]
Details (2)
- 1.44-3 · amd64 · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
- 1.44-3 · arm64 · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
[connman-doc]Fixed
Source package: [connman]
Details (2)
- 1.44-3 · all · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
- 1.44-3 · all · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
[connman-tests]Fixed
Source package: [connman]
Details (2)
- 1.44-3 · all · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
- 1.44-3 · all · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
[connman-vpn]Fixed
Source package: [connman]
Details (2)
- 1.44-3 · amd64 · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13
- 1.44-3 · arm64 · trixie
  Fixed · Fixed: 1.36-2.1
  dsa · connman · debian · 13

Observed: Oct 23, 2026, 5:55:14 PM UTC

References

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