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wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash

🗓️ 15 Oct 2026 21:36:23Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 6 Views

Unauthenticated remote DoS in Wireshark via C12.22 protocol dissector crash.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
nessus
Tenable Nessus		Amazon Linux 2023 : wireshark-cli, wireshark-devel (ALAS2023-2026-2117)
31 Aug 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : wireshark (ALAS-2026-3905)
14 Sep 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 9 : wireshark (ALSA-2026:83546)
16 Oct 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 8 : wireshark (ALSA-2026:83657)
16 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8 [CIQ] Security Update: wireshark / wireshark-cli / wireshark-cli-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_83657)
17 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 9 [CIQ] Security Update: wireshark / wireshark-cli / wireshark-cli-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_83546)
17 Oct 202600:00
–nessus
nessus
Tenable Nessus		Debian dsa-6471 : libwireshark-data - security update
27 Aug 202600:00
–nessus
nessus
Tenable Nessus		Wireshark 4.4.x < 4.4.18 Multiple Vulnerabilities (macOS)
20 Aug 202600:00
–nessus
nessus
Tenable Nessus		Wireshark 4.4.x < 4.4.19 Multiple Vulnerabilities (macOS)
23 Sep 202600:00
–nessus
nessus
Tenable Nessus		Wireshark 4.6.x < 4.6.8 Multiple Vulnerabilities (macOS)
20 Aug 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10aarch64wireshark1:2.6.2-21.el8_10wireshark-1:2.6.2-21.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lewireshark1:2.6.2-21.el8_10wireshark-1:2.6.2-21.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xwireshark1:2.6.2-21.el8_10wireshark-1:2.6.2-21.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64wireshark1:2.6.2-21.el8_10wireshark-1:2.6.2-21.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64wireshark-cli1:2.6.2-21.el8_10wireshark-cli-1:2.6.2-21.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10i686wireshark-cli1:2.6.2-21.el8_10wireshark-cli-1:2.6.2-21.el8_10.i686.rpm
Red Hat Enterprise Linux8.10ppc64lewireshark-cli1:2.6.2-21.el8_10wireshark-cli-1:2.6.2-21.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xwireshark-cli1:2.6.2-21.el8_10wireshark-cli-1:2.6.2-21.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64wireshark-cli1:2.6.2-21.el8_10wireshark-cli-1:2.6.2-21.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64wireshark-cli-debuginfo1:2.6.2-21.el8_10wireshark-cli-debuginfo-1:2.6.2-21.el8_10.aarch64.rpm
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19 Oct 2026 08:24Current
7.4High risk
Vulners AI Score7.4
CVSS 3.18.1 - 9.8
EPSS0.00382
SSVC
CWE-617
WiresharkC12.22 protocol dissectorDoSremote attackcrashunix
6