CVE catalog

CVE-2020-26575

wireshark: CVE-2020-26575

Severity: Medium · CVSS 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Published: Oct 6, 2020, 3:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 3.12% · Oct 25, 2026

In Wireshark through 3.2.7, the Facebook Zero Protocol (aka FBZERO) dissector could enter an infinite loop. This was addressed in epan/dissectors/packet-fbzero.c by correcting the implementation of offset advancement.

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	wireshark	sid	`4.6.9-1`	fixed
Debian	wireshark	forky	`4.6.9-1`	fixed
Debian	wireshark	trixie	`4.4.18-0+deb13u1`	fixed
Debian	wireshark	trixie-security	`4.4.19-0+deb13u1`	fixed
Debian	wireshark	bookworm	`4.0.17-0+deb12u3`	fixed
Debian	wireshark	bookworm-security	`4.0.17-0+deb12u3`	fixed
Ubuntu	wireshark	pro	`3.0.5-1`	vulnerable
Ubuntu	wireshark	pro	`3.0.7-1`	vulnerable
Ubuntu	wireshark	pro	`3.2.1-1`	vulnerable
Ubuntu	wireshark	pro	`3.2.2-1`	vulnerable
Ubuntu	wireshark	pro	`3.2.3-1`	vulnerable
Ubuntu	wireshark	pro	`3.2.3-1ubuntu0.1~esm1`	vulnerable
Ubuntu	wireshark	pro	`3.2.3-1ubuntu0.1~esm2`	vulnerable
Suse	wireshark	linux enterprise module for basesystem 15 sp1	`3.2.8-3.44.1`	fixed
Suse	wireshark	linux enterprise module for basesystem 15 sp2	`3.2.8-3.44.1`	fixed
Suse	wireshark	linux enterprise module for desktop applications 15 sp1	`3.2.8-3.44.1`	fixed
Suse	wireshark	linux enterprise module for desktop applications 15 sp2	`3.2.8-3.44.1`	fixed
Opensuse	wireshark	leap 15.2	`3.2.8-lp152.2.9.1`	fixed
Opensuse	wireshark	leap 15.1	`3.2.8-lp151.2.18.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	wireshark	source	sid	`3.2.8-0.1`	not yet assigned	Not reported	[974688]
Debian	wireshark	source	forky	`3.2.8-0.1`	not yet assigned	Not reported	[974688]
Debian	wireshark	source	trixie	`3.2.8-0.1`	not yet assigned	Not reported	[974688]
Debian	wireshark	source	bookworm	`3.2.8-0.1`	not yet assigned	Not reported	[974688]
Suse	wireshark	rpm	linux enterprise module for basesystem 15 sp1	`3.2.8-3.44.1`	Not reported	SUSE-SU-2020:3376-1	Not reported
Suse	wireshark	rpm	linux enterprise module for basesystem 15 sp2	`3.2.8-3.44.1`	Not reported	SUSE-SU-2020:3376-1	Not reported
Suse	wireshark	rpm	linux enterprise module for desktop applications 15 sp1	`3.2.8-3.44.1`	Not reported	SUSE-SU-2020:3376-1	Not reported
Suse	wireshark	rpm	linux enterprise module for desktop applications 15 sp2	`3.2.8-3.44.1`	Not reported	SUSE-SU-2020:3376-1	Not reported
Opensuse	wireshark	rpm	leap 15.2	`3.2.8-lp152.2.9.1`	Not reported	OPENSUSE-SU-2020:2076-1	Not reported
Opensuse	wireshark	rpm	leap 15.1	`3.2.8-lp151.2.18.1`	Not reported	OPENSUSE-SU-2020:2107-1	Not reported

[Debian bug #974688]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libwireshark16]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwireshark-data]Unknown
Source package: [wireshark]
Details (6)
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwireshark-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwiretap13]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwiretap-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwsutil14]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwsutil-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[tshark]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark]Unknown
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-common]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-doc]Unknown
Source package: [wireshark]
Details (6)
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-gtk]Unknown
Source package: [wireshark]
Details (2)
- 4.0.6-1~deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-qt]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12

[Debian 13 (Trixie)]

[libwireshark18]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
[libwireshark-data]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · all · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · all · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
[libwireshark-dev]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
[libwiretap15]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
[libwiretap-dev]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
[libwsutil16]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.2.8-0.1
  dsa · wireshark · debian · 13

Next results

Observed: Oct 23, 2026, 5:50:15 PM UTC

References

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