CVE-2011-5121: The Antivirus component in Comodo Internet Security before 5.3.175888.1227 does not properly check whether...

Security readout for executives and security teams

This CVE describes a certificate revocation-checking flaw in the Antivirus component of Comodo Internet Security versions before 5.3.175888.1227. The public record does not explain the business impact, practical attack path, or exploitation history. Treat it as a legacy endpoint-security integrity issue until inventory proves no affected versions remain. Exposure is likely limited to legacy endpoints or archived builds still running Comodo Internet Security earlier than 5.3.175888.1227. The source bundle does not identify current products, platforms, configurations, or CPEs. Set priority after confirming exposure. If affected versions are present, remediate as part of legacy endpoint-security risk reduction because impact is not described but the component is security-critical. Mitigation focus: Inventory endpoints for Comodo Internet Security versions before 5.3.175888.1227.; Check Comodo release notes or vendor guidance for the supported fixed upgrade path.; Remove or replace unsupported legacy Comodo Internet Security installations..

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.