VULNERABILITY INTELLIGENCE

CVE-2016-5259

CVSS score8.8 HIGH
EPSS probability3.26%
CISA KEVNot currently listed
Published2016-08-05
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.

Weakness classification

  • CWE-416: Use After Free

Primary references