CVE-2008-5023: Firefox 3.x before 3.0.4, Firefox 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attack...

Security readout for executives and security teams

This is an old Mozilla browser vulnerability affecting Firefox and SeaMonkey versions from 2008. A malicious remote page or content could bypass a browser protection mechanism and run arbitrary script. The main business risk today is from unmanaged legacy systems, kiosk images, embedded desktops, or archived application stacks still using those browser versions. Most modern environments should have low exposure because the affected browsers are obsolete. Exposure is plausible where legacy Mozilla packages remain installed on old Linux distributions, thin clients, lab systems, or application environments frozen around 2008-era browser dependencies. Prioritize this only if legacy browsers are still present. If found, remediation should be prompt because the issue is remotely reachable and involves arbitrary script execution, even though active exploitation is not evidenced in the supplied sources. Mitigation focus: Upgrade Firefox to 3.0.4, 2.0.0.18, or later as applicable.; Upgrade SeaMonkey to 1.1.13 or later.; Apply relevant vendor security updates for packaged Mozilla browsers..

Prepared

Jun 28, 2026, 18:15 UTC (UTC+00:00)

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