CVE-2017-3814: A vulnerability in Cisco Firepower System Software could allow an unauthenticated, remote attacker to malic...

Security readout for executives and security teams

This flaw could let an unauthenticated remote attacker get around Cisco Firepower web content blocking. It is a security-control bypass, not described as code execution or data theft. Business impact is greatest where Firepower is relied on to prevent access to prohibited or risky web destinations. Likely exposure is limited to organizations running the listed Cisco Firepower System Software 5.x or 6.x releases and using the appliance for web content blocking. The bundle does not define the exact deployment conditions required for bypass. Prioritize as a control-bypass risk for environments depending on Firepower web filtering. It is not presented as critical in the supplied evidence, but it can weaken policy enforcement and compliance controls. Mitigation focus: Check Cisco advisory CSCvb93980 for fixed releases and vendor workarounds.; Inventory Firepower appliances for affected 5.3.0, 5.4.0, 6.0.0, 6.0.1, or 6.1.0 releases.; Prioritize remediation where Firepower enforces web content restrictions..

Prepared

Jun 13, 2026, 06:20 UTC (UTC+00:00)

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