Issued at: 2026-10-20
Updated at: 2026-10-20
Advisory content derived from Red Hat RHSA-2026:84721, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: wireshark security update
Description
The wireshark packages contain a network protocol analyzer used to capture and browse the traffic running on a computer network.
Security Fix(es):
* wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash (CVE-2026-76886)
* wireshark: Wireshark: Denial of Service via RRC protocol dissector out-of-bounds write (CVE-2026-76880)
* wireshark: Wireshark: Denial of Service vulnerability in ESS protocol dissector (CVE-2026-76919)
* wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash (CVE-2026-76879)
* wireshark: Wireshark: Denial of Service via X.509IF protocol dissector crash (CVE-2026-76928)
* wireshark: Wireshark: Denial of Service vulnerability in H.245 protocol dissector (CVE-2026-76927)
* wireshark: wireshark: Denial of Service via heap-based buffer overflow in SPDY dissector (CVE-2026-95387)
* wireshark: Heap-based Buffer Overflow in Wireshark (CVE-2026-95389)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.