CVE-2026-6530 Wireshark Foundation CVE debrief

Who should care

Network administrators, security teams, and users of Wireshark should assess exposure and take necessary actions to mitigate the vulnerability.

Why it matters

This vulnerability in Wireshark's DCP-ETSI protocol dissector could lead to denial-of-service attacks, requiring network administrators and security teams to assess exposure and apply patches or mitigations.

• Potential denial-of-service attacks against network infrastructure.
• Need for network administrators to assess exposure and apply patches.

Technical summary

The DCP-ETSI protocol dissector in Wireshark could crash, leading to a denial-of-service condition. This issue affects Wireshark versions 4.4.0 to 4.4.14 and 4.6.0 to 4.6.4. The vulnerability is caused by a flaw in the DCP-ETSI protocol dissector that can be exploited by a malicious packet. Network administrators and security teams should assess exposure and apply patches or mitigations to prevent potential denial-of-service attacks.

Defensive priority

Medium priority for network administrators and security teams to assess exposure and apply patches or mitigations.

Recommended defensive actions

• Assess exposure by reviewing network configurations and Wireshark versions in use.
• Apply patches or updates to Wireshark to address the vulnerability.
• Monitor network traffic and Wireshark logs for potential exploitation attempts.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including affected versions and potential impact. However, there is limited information on exploitation or victim data.

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.