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PatchSiren cyber security CVE debrief

CVE-2026-6526 Wireshark Foundation CVE debrief

A vulnerability in the RTSP protocol dissector in Wireshark 4.6.0 to 4.6.4 could cause a crash, classified as CWE-476. This issue affects network administrators and security teams responsible for Wireshark installations, who should assess exposure and prioritize remediation to prevent potential denial of service. The vulnerability has a CVSS score of 5.5 and is considered medium severity. The CVE record and NVD entry provide details on the vulnerability, but there is limited information on potential exploits or impacts.

Vendor
Wireshark Foundation
Product
Wireshark
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-30
Original CVE updated
2026-10-26
Advisory published
2026-04-30
Advisory updated
2026-10-26

Who should care

Network administrators and security teams responsible for Wireshark installations should assess exposure and prioritize remediation to prevent potential denial of service. They should verify Wireshark installations and review compensating controls for exposed systems while remediation is scheduled and verified. Additionally, they should check relevant monitoring, detection, and logs for exposed assets that need extra

Why it matters

CVE-2026-6526 is a vulnerability in the RTSP protocol dissector in Wireshark 4.6.0 to 4.6.4 that could cause a crash. Network administrators and security teams should prioritize verifying Wireshark installations and assessing exposure.

  • Potential denial of service if exploited
  • Need to verify Wireshark installations and assess exposure

Technical summary

The RTSP protocol dissector in Wireshark 4.6.0 to 4.6.4 is vulnerable to a crash due to CWE-476. The vulnerability has a CVSS score of 5.5 and is considered medium severity. Network administrators and security teams should prioritize verifying Wireshark installations and assessing exposure to prevent potential denial of service. The CVE record and NVD entry provide details on the vulnerability.

Defensive priority

Network administrators and security teams should prioritize verifying Wireshark installations and assessing exposure, as this vulnerability could lead to a denial of service if exploited.

Recommended defensive actions

  • Verify Wireshark installations to determine if they are vulnerable
  • Assess exposure and prioritize remediation
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its classification as CWE-476 and a CVSS score of 5.5. However, there is limited information on potential exploits or impacts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-6526 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-6526

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

  • CVE-2026-6526 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-6526

    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.