CVE-2026-76879Medium· 6.5▾ SunlitA flaw in Wireshark's C12.22 protocol dissector allows remote attackers to trigger a Denial of Service (DoS). By sending a specially crafted network packet or capture file, an attacker can crash the application, disrupting network analysis…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 17.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.3%
0.3% → 0.3%
7.5 → 6.5
high → medium
Last analysed / modified upstream
A flaw in Wireshark's C12.22 protocol dissector allows remote attackers to trigger a Denial of Service (DoS). By sending a specially crafted network packet or capture file, an attacker can crash the application, disrupting network analysis capabilities.
wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash — rated Moderate by Red Hat. Released 2026-08-19, updated 2026-10-19.
Fixed:
Not affected:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:84721
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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