CVE-2016-1972: Race condition in libvpx in Mozilla Firefox before 45.0 on Windows might allow remote attackers to cause a...

Security readout for executives and security teams

This 2016 issue concerns a race condition in libvpx used by Mozilla Firefox before 45.0 on Windows. A remote attacker might crash the browser through a use-after-free condition, with sources also noting possible unspecified other impact. The public data does not describe the attack vector or confirm exploitation. Exposure is most likely limited to legacy Windows endpoints running Mozilla Firefox versions before 45.0. Linux distribution advisories in the references suggest packaged Mozilla updates may also have been relevant, but the supplied affected-product data is incomplete. Prioritize remediation if legacy Firefox remains in production, especially on Windows endpoints. For modern managed fleets, urgency is likely low after verification, because this is an old issue with no supplied evidence of active exploitation. Mitigation focus: Upgrade affected Firefox installations to version 45.0 or later where applicable.; Apply Mozilla or operating-system vendor security updates for packaged Firefox builds.; Retire unsupported legacy Firefox versions from managed endpoints..

Prepared

Jun 13, 2026, 21:06 UTC (UTC+00:00)

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