RHSA-2026:83546 — Security Advisory
Red Hat Security Advisory: wireshark security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · October 15, 2026
Updated · November 3, 2026
Topic
An update for wireshark is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The wireshark packages contain a network protocol analyzer used to capture and browse the traffic running on a computer network.
Security Fix(es):
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wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash (CVE-2026-76886)
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wireshark: Wireshark: Denial of Service via RRC protocol dissector out-of-bounds write (CVE-2026-76880)
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wireshark: Wireshark: Denial of Service vulnerability in ESS protocol dissector (CVE-2026-76919)
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wireshark: Wireshark: Denial of Service vulnerability in H.245 protocol dissector (CVE-2026-76927)
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wireshark: wireshark: Denial of Service via heap-based buffer overflow in SPDY dissector (CVE-2026-95387)
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.