critical
CVE-2026-76886
wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, Photon OS. Rated lower by AlmaLinux (high), Amazon (high), Oracle (high), Rocky Linux (high), Red Hat (medium).
Description
C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 5.0 | wireshark, wireshark-devel | 4.6.8-1.ph5 |
| alma 10 | wireshark, wireshark-cli, wireshark-devel | 1:4.4.2-10.el10_2.8 |
| alma 8 | wireshark, wireshark-cli, wireshark-devel | 1:2.6.2-21.el8_10 |
| alma 9 | wireshark, wireshark-cli, wireshark-devel | 1:3.4.10-9.el9_8.5 |
| amazon linux 2 | wireshark, wireshark-cli, wireshark-debuginfo and 1 more | 1:2.6.2-15.amzn2.0.11 |
| amazon linux 2023 | wireshark-cli, wireshark-cli-debuginfo, wireshark-debugsource and 1 more | 1:4.6.8-1.amzn2023.0.1 |
| debian 11 | wireshark | no fix listed |
| debian 12 | wireshark | no fix listed |
| debian 13 | wireshark | 4.4.18-0+deb13u1 |
| debian 14 | wireshark | 4.6.9-1 |
| echo | wireshark | 4.4.18-0+deb13u1 |
| minimos | tshark-4.4 | 4.4.18-r0 |
Show all 73 entries from 35 sources
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 5.0 | wireshark | 4.6.8-1.ph5 |
| Photon OS 5.0 | wireshark-devel | 4.6.8-1.ph5 |
| alma 10 | wireshark | 1:4.4.2-10.el10_2.8 |
| alma 10 | wireshark-cli | 1:4.4.2-10.el10_2.8 |
| alma 10 | wireshark-devel | 1:4.4.2-10.el10_2.8 |
| alma 8 | wireshark | 1:2.6.2-21.el8_10 |
| alma 8 | wireshark-cli | 1:2.6.2-21.el8_10 |
| alma 8 | wireshark-devel | 1:2.6.2-21.el8_10 |
| alma 9 | wireshark | 1:3.4.10-9.el9_8.5 |
| alma 9 | wireshark-cli | 1:3.4.10-9.el9_8.5 |
| alma 9 | wireshark-devel | 1:3.4.10-9.el9_8.5 |
| amazon linux 2 | wireshark | 1:2.6.2-15.amzn2.0.11 |
| amazon linux 2 | wireshark-cli | 1:2.6.2-15.amzn2.0.11 |
| amazon linux 2 | wireshark-debuginfo | 1:2.6.2-15.amzn2.0.11 |
| amazon linux 2 | wireshark-devel | 1:2.6.2-15.amzn2.0.11 |
| amazon linux 2023 | wireshark-cli | 1:4.6.8-1.amzn2023.0.1 |
| amazon linux 2023 | wireshark-cli-debuginfo | 1:4.6.8-1.amzn2023.0.1 |
| amazon linux 2023 | wireshark-debugsource | 1:4.6.8-1.amzn2023.0.1 |
| amazon linux 2023 | wireshark-devel | 1:4.6.8-1.amzn2023.0.1 |
| debian 11 | wireshark | no fix listed |
| debian 12 | wireshark | no fix listed |
| debian 13 | wireshark | 4.4.18-0+deb13u1 |
| debian 14 | wireshark | 4.6.9-1 |
| echo | wireshark | 4.4.18-0+deb13u1 |
| minimos | tshark-4.4 | 4.4.18-r0 |
| Oracle Linux 8 | wireshark | 1:2.6.2-21.el8_10 |
| Oracle Linux 8 | wireshark-cli | 1:2.6.2-21.el8_10 |
| Oracle Linux 8 | wireshark-devel | 1:2.6.2-21.el8_10 |
| Oracle Linux 9 | wireshark | 1:3.4.10-9.el9_8.5 |
| Oracle Linux 9 | wireshark-cli | 1:3.4.10-9.el9_8.5 |
| Oracle Linux 9 | wireshark-devel | 1:3.4.10-9.el9_8.5 |
| rapidfort alma 10 | wireshark | 1:4.4.2-10.el10_2.8 |
| rapidfort alma 10 | wireshark-cli | 1:4.4.2-10.el10_2.8 |
| rapidfort alma 10 | wireshark-devel | 1:4.4.2-10.el10_2.8 |
| rapidfort alma 9 | wireshark | 1:3.4.10-9.el9_8.5 |
| rapidfort alma 9 | wireshark-cli | 1:3.4.10-9.el9_8.5 |
| rapidfort alpine 3.20 | wireshark | 4.6.8-r0 |
| rapidfort alpine 3.21 | wireshark | 4.6.8-r0 |
| rapidfort alpine 3.22 | wireshark | 4.6.8-r0 |
| rapidfort alpine 3.23 | wireshark | 4.6.8-r0 |
| rapidfort alpine 3.24 | wireshark | 4.6.8-r0 |
| rapidfort amazon linux 2023 | wireshark-cli | 1:4.6.8-1.amzn2023.0.1 |
| rapidfort amazon linux 2023 | wireshark-devel | 1:4.6.8-1.amzn2023.0.1 |
| rapidfort debian 12 | rf-wireshark | 0:4.4.18-0+deb13u1, 0:4.6.9-1 |
| rapidfort debian 12 | wireshark | 0:4.4.18-0+deb13u1, 0:4.6.9-1 |
| rapidfort debian 13 | rf-wireshark | 0:4.4.18-0+deb13u1, 0:4.6.9-1 |
| rapidfort debian 13 | wireshark | 0:4.4.18-0+deb13u1, 0:4.6.9-1 |
| rapidfort fedora 43 | wireshark | 1:4.6.8-1.fc43 |
| rapidfort fedora 43 | wireshark-cli | 1:4.6.8-1.fc43 |
| rapidfort fedora 43 | wireshark-devel | 1:4.6.8-1.fc43 |
| rapidfort Oracle Linux 10 | wireshark | 1:4.4.2-10.0.1.el10_2.8 |
| rapidfort Oracle Linux 10 | wireshark-cli | 1:4.4.2-10.0.1.el10_2.8 |
| rapidfort Oracle Linux 10 | wireshark-devel | 1:4.4.2-10.0.1.el10_2.8 |
| rapidfort Oracle Linux 9 | wireshark | 1:3.4.10-9.el9_8.5 |
| rapidfort Oracle Linux 9 | wireshark-cli | 1:3.4.10-9.el9_8.5 |
| rapidfort Oracle Linux 9 | wireshark-devel | 1:3.4.10-9.el9_8.5 |
| rapidfort rocky 9 | wireshark | 1:3.4.10-9.el9_8.5 |
| rapidfort rocky 9 | wireshark-cli | 1:3.4.10-9.el9_8.5 |
| rapidfort ubuntu 20.04 | rf-wireshark | no fix listed |
| rapidfort ubuntu 20.04 | wireshark | no fix listed |
| rapidfort ubuntu 22.04 | rf-wireshark | no fix listed |
| rapidfort ubuntu 22.04 | wireshark | no fix listed |
| rapidfort ubuntu 24.04 | rf-wireshark | no fix listed |
| rapidfort ubuntu 24.04 | wireshark | no fix listed |
| Red Hat | wireshark | no fix listed |
| Red Hat | wireshark-devel | no fix listed |
| Red Hat | wireshark-gnome | no fix listed |
| rocky 10 | wireshark | 1:4.4.2-10.el10_2.8 |
| rocky 10 | wireshark-cli | 1:4.4.2-10.el10_2.8 |
| rocky 8 | wireshark | 1:2.6.2-21.el8_10 |
| rocky 8 | wireshark-cli | 1:2.6.2-21.el8_10 |
| rocky 9 | wireshark | 1:3.4.10-9.el9_8.5 |
| rocky 9 | wireshark-cli | 1:3.4.10-9.el9_8.5 |
References
- https://access.redhat.com/errata/RHSA-2026:83546
- https://access.redhat.com/security/cve/CVE-2026-76886
- https://bugzilla.redhat.com/2520079
- https://bugzilla.redhat.com/2520088
- https://bugzilla.redhat.com/2520093
- https://bugzilla.redhat.com/2520103
- https://bugzilla.redhat.com/2543033
- https://bugzilla.redhat.com/show_bug.cgi?id=2520079
All 27 references
- https://bugzilla.redhat.com/show_bug.cgi?id=2520088
- https://bugzilla.redhat.com/show_bug.cgi?id=2520093
- https://bugzilla.redhat.com/show_bug.cgi?id=2520103
- https://bugzilla.redhat.com/show_bug.cgi?id=2543033
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-76880
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-76886
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-76919
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-76927
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-95387
- https://errata.almalinux.org/9/ALSA-2026-83546.html
- https://errata.rockylinux.org/RLSA-2026:83546
- https://gitlab.com/wireshark/wireshark/-/work_items/21439
- https://gitlab.com/wireshark/wireshark/-/work_items/21446
- https://linux.oracle.com/cve/CVE-2026-76886.html
- https://linux.oracle.com/errata/ELSA-2026-84721.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-76886
- https://www.cve.org/CVERecord?id=CVE-2026-76886
- https://www.wireshark.org/security/wnpa-sec-2026-75.html