CVE-2011-2175: Integer underflow in the visual_read function in wiretap/visual.c in Wireshark 1.2.x before 1.2.17 and 1.4....

Security readout for executives and security teams

This is an old Wireshark crash vulnerability. A specially malformed Visual Networks capture file can make vulnerable Wireshark versions crash when opened. The documented impact is denial of service to the analyst’s application, not system compromise. Exposure is mainly legacy systems running vulnerable Wireshark builds and users who open untrusted or externally supplied Visual Networks capture files. Modern installations are unlikely to be affected if patched beyond the named fixed versions. Treat as a targeted legacy-tool risk. Prioritize remediation where security teams, network engineers, or support staff open external capture files using old Wireshark versions. Broad emergency response is not supported by the supplied evidence. Mitigation focus: Upgrade Wireshark to 1.2.17, 1.4.7, or a later vendor-fixed release.; Apply distribution security updates from Debian, Fedora, Red Hat, or relevant package vendors.; Avoid opening untrusted Visual Networks files on vulnerable Wireshark versions..

Prepared

Jun 28, 2026, 00:52 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.