RHSA-2026:84721: wireshark security update

RHSA-2026:84721, released October 19, 2026, fixes 8 CVEs in wireshark (version 4.4.2-10.el10_2.8). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0038

32nd percentile

Priority of the 8 CVEs

Patch now 0
                                Urgent 1
                                High 7
                                Routine 0

Fixed package versions

Product	Release	Fixed in
wireshark	RHEL 10	4.4.2-10.el10_2.8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	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	9.8	0.0038	None reported
High	CVE-2026-95389	wireshark: SCTP protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service	8.1	0.0034	None reported
High	CVE-2026-76928	wireshark: X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service	8.1	0.0032	None reported
High	CVE-2026-76879	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	8.1	0.0031	None reported
High	CVE-2026-76919	wireshark: ESS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service	8.1	0.0031	None reported
High	CVE-2026-95387	wireshark: The wireshark packages contain a network protocol analyzer used to capture and browse the traffic running on a comput...	8.8	0.0026	None reported
High	CVE-2026-76880	wireshark: RRC protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service	8.1	0.0024	None reported
High	CVE-2026-76927	wireshark: H.245 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service	8.1	0.0018	None reported

Also fixes CVE-2026-76886

OPENSUSE-SU-2026:22014-1
wireshark on opensuse-leap 16.0
SUSE-SU-2026:24013-1
wireshark on sles 16.0
SUSE-SU-2026:4379-1
wireshark on sles 15.7
ALAS2023-2026-2117
wireshark-cli, wireshark-cli-debuginfo, wireshark-debugsource and 1 more on amzn 2023
ELSA-2026-84721
wireshark, wireshark-cli, wireshark-devel on ol 10
ALSA-2026:84721
wireshark, wireshark-cli, wireshark-devel on almalinux 10
RLSA-2026:84721
wireshark on rocky 10
ELSA-2026-83546
wireshark, wireshark-cli, wireshark-devel on ol 9

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:84721

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