CVE-2026-76886
wireshark: 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
CVE-2026-76886 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-76886, released August 28, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
9.8
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0038
32nd percentile
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
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| wireshark · Debian 13.5 (trixie) | 4.4.18-0+deb13u1 | DEBIAN-CVE-2026-76886 | Aug 28, 2026 |
| wireshark · Debian 14 | 4.6.9-1 | DEBIAN-CVE-2026-76886 | Aug 28, 2026 |
| wireshark · RHEL 10 | 4.4.2-10.el10_2.8 | RHSA-2026:84721 | Oct 19, 2026 |
| wireshark · RHEL 8 | 1:2.6.2-21.el8_10 | RHSA-2026:83657 | Oct 16, 2026 |
| wireshark · RHEL 9 | 1:3.4.10-9.el9_8.5 | RHSA-2026:83546 | Oct 16, 2026 |
| wireshark · almalinux 10 | 1:4.4.2-10.el10_2.8 | ALSA-2026:84721 | Nov 7, 2026 |
| wireshark · almalinux 8 | 1:2.6.2-21.el8_10 | ALSA-2026:83657 | Nov 7, 2026 |
| wireshark · almalinux 9 | 1:3.4.10-9.el9_8.5 | ALSA-2026:83546 | Nov 7, 2026 |
| wireshark · ol 10 | 1:4.4.2-10.0.1.el10_2.8 | ELSA-2026-84721 | Nov 7, 2026 |
| wireshark · ol 8 | 1:2.6.2-21.el8_10 | ELSA-2026-83657 | Nov 7, 2026 |
| wireshark · ol 9 | 1:3.4.10-9.el9_8.5 | ELSA-2026-83546 | Nov 7, 2026 |
| wireshark · opensuse-leap 16.0 | 4.4.18-160000.1.1 | OPENSUSE-SU-2026:22014-1 | Oct 2, 2026 |
| wireshark · rocky 10 | 1:4.4.2-10.el10_2.8 | RLSA-2026:84721 | Nov 7, 2026 |
| wireshark · rocky 8 | 1:2.6.2-21.el8_10 | RLSA-2026:83657 | Nov 7, 2026 |
| wireshark · rocky 9 | 1:3.4.10-9.el9_8.5 | RLSA-2026:83546 | Nov 7, 2026 |
| wireshark · sles 15.7 | 4.6.8-150700.21.14.1 | SUSE-SU-2026:4379-1 | Sep 28, 2026 |
| wireshark · sles 16.0 | 4.4.18-160000.1.1 | SUSE-SU-2026:24013-1 | Oct 2, 2026 |
| wireshark-cli · RHEL 8 | 1:2.6.2-21.el8_10 | RHSA-2026:83657 | Oct 16, 2026 |
| wireshark-cli · RHEL 9 | 1:3.4.10-9.el9_8.5 | RHSA-2026:83546 | Oct 16, 2026 |
| wireshark-cli · almalinux 10 | 1:4.4.2-10.el10_2.8 | ALSA-2026:84721 | Nov 7, 2026 |
| wireshark-cli · almalinux 8 | 1:2.6.2-21.el8_10 | ALSA-2026:83657 | Nov 7, 2026 |
| wireshark-cli · almalinux 9 | 1:3.4.10-9.el9_8.5 | ALSA-2026:83546 | Nov 7, 2026 |
| wireshark-cli · amzn 2023 | 1:4.6.8-1.amzn2023.0.1 | ALAS2023-2026-2117 | Aug 31, 2026 |
| wireshark-cli · ol 10 | 1:4.4.2-10.0.1.el10_2.8 | ELSA-2026-84721 | Nov 7, 2026 |
| wireshark-cli · ol 8 | 1:2.6.2-21.el8_10 | ELSA-2026-83657 | Nov 7, 2026 |
| wireshark-cli · ol 9 | 1:3.4.10-9.el9_8.5 | ELSA-2026-83546 | Nov 7, 2026 |
| wireshark-cli-debuginfo · amzn 2023 | 1:4.6.8-1.amzn2023.0.1 | ALAS2023-2026-2117 | Aug 31, 2026 |
| wireshark-debugsource · amzn 2023 | 1:4.6.8-1.amzn2023.0.1 | ALAS2023-2026-2117 | Aug 31, 2026 |
| wireshark-devel · RHEL 8 | 1:2.6.2-21.el8_10 | RHSA-2026:83657 | Oct 16, 2026 |
| wireshark-devel · RHEL 9 | 1:3.4.10-9.el9_8.5 | RHSA-2026:83546 | Oct 16, 2026 |
| wireshark-devel · almalinux 10 | 1:4.4.2-10.el10_2.8 | ALSA-2026:84721 | Nov 7, 2026 |
| wireshark-devel · almalinux 8 | 1:2.6.2-21.el8_10 | ALSA-2026:83657 | Nov 7, 2026 |
| wireshark-devel · almalinux 9 | 1:3.4.10-9.el9_8.5 | ALSA-2026:83546 | Nov 7, 2026 |
| wireshark-devel · amzn 2023 | 1:4.6.8-1.amzn2023.0.1 | ALAS2023-2026-2117 | Aug 31, 2026 |
| wireshark-devel · ol 10 | 1:4.4.2-10.0.1.el10_2.8 | ELSA-2026-84721 | Nov 7, 2026 |
| wireshark-devel · ol 8 | 1:2.6.2-21.el8_10 | ELSA-2026-83657 | Nov 7, 2026 |
| wireshark-devel · ol 9 | 1:3.4.10-9.el9_8.5 | ELSA-2026-83546 | Nov 7, 2026 |
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