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PatchSiren cyber security CVE debrief

CVE-2026-76887 Wireshark Foundation CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-19T23:16:19.677Z and has not been modified since then. The Wireshark dissection engine crashes in versions 4.4.0 to 4.4.18 and 4.6.0 to 4.6.7, allowing for denial of service. This vulnerability has a low CVSS score of 3.1 and a low CVSS severity. Network administrators and security teams responsible for Wireshark installations should verify and update vulnerable versions to prevent denial of service. Additional review is needed to confirm scope and impact. Evidence limits suggest that defensive verification tasks include reviewing Wireshark installations, applying vendor advisories, and monitoring security updates.

Vendor
Wireshark Foundation
Product
Wireshark
CVSS
LOW 3.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-19
Original CVE updated
2026-08-31
Advisory published
2026-08-19
Advisory updated
2026-08-31

Who should care

Network administrators and security teams responsible for Wireshark installations; verify and update vulnerable versions to prevent denial of service. Affected operators and platforms suggest that additional review is needed to confirm scope and impact. Vulnerability management and security teams should review and apply vendor advisories for mitigation guidance and monitor Wireshark security updates and patch management processes.

Technical summary

The Wireshark dissection engine crashes in versions 4.4.0 to 4.4.18 and 4.6.0 to 4.6.7, allowing for denial of service; update to version 4.6.8 or later. Affected product context indicates that network administrators and security teams should verify and update vulnerable versions to prevent denial of service. Technical framing suggests that the vulnerability has a low CVSS score of 3.1 and a low CVSS severity.

Defensive priority

Low-priority defensive review recommended due to limited attack surface; verify Wireshark installations and ensure version 4.6.8 or later is deployed.

Recommended defensive actions

  • Verify Wireshark installations and ensure version 4.6.8 or later is deployed.
  • Review and apply vendor advisories for mitigation guidance.
  • Monitor Wireshark security updates and patch management processes.

Evidence notes

Official CVE Program record and NVD vulnerability detail page confirm vulnerability in Wireshark dissection engine; verify affected versions 4.4.0 to 4.4.18 and 4.6.0 to 4.6.7. Evidence limits suggest additional review is needed to confirm scope and impact. Defensive verification tasks include reviewing Wireshark installations, applying vendor advisories, and monitoring security updates.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76887 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76887

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

  • CVE-2026-76887 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76887

    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.