CVE-2026-6520: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark Foundation Wireshark
OpenFlow v6 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
AI Analysis
Technical Summary
This vulnerability is a loop with an unreachable exit condition (CWE-835) in the OpenFlow v6 protocol dissector component of Wireshark versions 4.6.0 through 4.6.4 and 4.4.0 through 4.4.14. When processing crafted OpenFlow v6 packets, the dissector can enter an infinite loop, leading to denial of service by exhausting resources or causing the application to hang. The CVSS 3.1 base score is 5.5, reflecting a locally exploitable denial of service with low attack complexity and no confidentiality or integrity impact.
Potential Impact
Successful exploitation causes denial of service by triggering an infinite loop in Wireshark's OpenFlow v6 dissector. This results in application unavailability or resource exhaustion. There is no impact on confidentiality or integrity. The attack requires local access and user interaction to trigger the vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid opening untrusted OpenFlow v6 packets in affected Wireshark versions. Monitoring for updates from the Wireshark Foundation is recommended to apply patches once available.
CVE-2026-6520: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark Foundation Wireshark
Description
OpenFlow v6 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a loop with an unreachable exit condition (CWE-835) in the OpenFlow v6 protocol dissector component of Wireshark versions 4.6.0 through 4.6.4 and 4.4.0 through 4.4.14. When processing crafted OpenFlow v6 packets, the dissector can enter an infinite loop, leading to denial of service by exhausting resources or causing the application to hang. The CVSS 3.1 base score is 5.5, reflecting a locally exploitable denial of service with low attack complexity and no confidentiality or integrity impact.
Potential Impact
Successful exploitation causes denial of service by triggering an infinite loop in Wireshark's OpenFlow v6 dissector. This results in application unavailability or resource exhaustion. There is no impact on confidentiality or integrity. The attack requires local access and user interaction to trigger the vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid opening untrusted OpenFlow v6 packets in affected Wireshark versions. Monitoring for updates from the Wireshark Foundation is recommended to apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-04-17T15:05:12.694Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f2f4e9cbff5d8610970bb4
Added to database: 4/30/2026, 6:21:29 AM
Last enriched: 4/30/2026, 6:38:24 AM
Last updated: 5/1/2026, 6:16:38 AM
Views: 9
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