CVE-2014-1540

critical
Published 2014-06-11 · Modified 2026-05-06
CVSS v3
CVSS v2
9.3
VIR risk
9.3

Description

Use-after-free vulnerability in the nsEventListenerManager::CompileEventHandlerInternal function in the Event Listener Manager in Mozilla Firefox before 30.0 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via crafted web content.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security@mozilla.org — http://www.mozilla.org/security/announce/2014/mfsa2014-51.html

Application impact

VendorProductVersionsFixed
mozilla mozillafirefox{"endIncluding":"29.0.1"}

References

Verify integrity in audit chain (admin only). AS-IS.