CVE-2026-76884 Wireshark Foundation CVE debrief

Who should care

Network administrators and security teams using Wireshark for network analysis should review their configurations and apply patches when available to prevent potential denial of service attacks. This review should include verifying the ERF file parser usage in network configurations and ensuring that compensating controls are in place for exposed systems while remediation is scheduled and verified. Additionally, checking relevant monitoring, detection, and logs for exposed assets that need extra review is recommended. This vulnerability has a CVSS score of 3.1 and is considered low severity, but it still requires attention from affected operators and security teams to ensure the security of their network infrastructure. The vulnerability affects Wireshark versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18, and users of these versions should take appropriate action to mitigate the vulnerability. This may involve reviewing the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance, and planning vendor-supported updates or mitigations through normal change control where exposure is confirmed. Asset inventory and vulnerability management processes should also be reviewed to ensure that affected systems are identified and prioritized for remediation. Overall, a thorough review of the network infrastructure and Wireshark configurations is necessary to ensure that the vulnerability is properly mitigated. This includes verifying that all necessary patches and updates are applied, and that compensating controls are in place to detect and prevent potential attacks. By taking these steps, network administrators and security teams can help prevent potential denial of service attacks and ensure the security of their network infrastructure. The CVE record was published on 2026-08-19T23:16:19.313Z and has not been modified since then, so users should rely on this information to inform their remediation efforts. Limited details are available on exploitability and affected scope, but it is clear that the vulnerability has the potential to impact network availability and security if left unmitigated. Therefore, it is essential that affected W

Technical summary

The Wireshark ERF file parser crashes when processing certain files, allowing a denial of service attack in versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18. The vulnerability has a CVSS score of 3.1 and is considered low severity. Affected users should review their network configurations and apply patches or updates when available to prevent potential denial of service attacks.

Defensive priority

Low-priority defensive review recommended due to limited attack surface and low CVSS score.

Recommended defensive actions

• Review Wireshark ERF file parser usage in network configurations
• Apply vendor patches or updates when available
• Monitor network traffic for suspicious ERF file parsing activity

Evidence notes

Evidence from official CVE and NVD sources indicates a denial of service vulnerability in Wireshark ERF file parser versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18. Limited details are available on exploitability and affected scope. Further review of network configurations and application of patches is recommended when available to prevent potential attacks. The CVE record was published on 2026-08-19T23:16:19.313Z and has not been modified since then.

Sources and 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.