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PatchSiren cyber security CVE debrief

CVE-2026-76924 Wireshark Foundation CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-19T23:16:21.200Z and has not been modified since then. This vulnerability affects Wireshark versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18, allowing for a denial of service via a crash in the Kerberos protocol dissector. Network administrators and security teams should be aware of this vulnerability and take necessary actions to protect their systems. The vulnerability can be triggered by specially crafted packets, and defenders should verify their Wireshark installations and apply patches or updates as needed. Evidence from official sources indicates a denial of service vulnerability in Wireshark's Kerberos protocol dissector. Limited details on exploitability and potential impact are available.

Vendor
Wireshark Foundation
Product
Wireshark
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-19
Original CVE updated
2026-09-01
Advisory published
2026-08-19
Advisory updated
2026-09-01

Who should care

Network administrators and security teams responsible for Wireshark installations, particularly in environments where Wireshark is used for network monitoring and analysis, should be aware of this vulnerability and take necessary actions to protect their systems. This includes reviewing and updating incident response plans to address potential denial of service attacks and implementing compensating controls such as network monitoring and access restrictions.

Technical summary

A denial of service vulnerability exists in the Kerberos protocol dissector of Wireshark versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18. The vulnerability is due to a crash in the dissector and can be exploited by specially crafted packets. This vulnerability allows for a denial of service, and defenders should verify their Wireshark installations and apply patches or updates as needed. The vulnerability can be triggered by specially crafted packets, and network administrators and security teams should be aware of this vulnerability and take necessary actions to protect their systems.

Defensive priority

Medium-priority defensive actions recommended due to potential denial of service via Kerberos protocol dissector crash in Wireshark versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18.

Recommended defensive actions

  • Inventory and verify Wireshark installations to identify potentially vulnerable versions
  • Apply vendor patches or updates to Wireshark installations
  • Implement compensating controls such as network monitoring and access restrictions
  • Review and update incident response plans to address potential denial of service attacks

Evidence notes

Evidence from official sources indicates a denial of service vulnerability in Wireshark's Kerberos protocol dissector. Affected versions include 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18. Limited details on exploitability and potential impact are available. The vulnerability can be triggered by specially crafted packets, and defenders should verify their Wireshark installations and apply patches or updates as needed.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76924 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76924

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-76924 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76924

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.