VULNERABILITY INTELLIGENCE

CVE-2016-5277

CVSS score9.8 CRITICAL
EPSS probability4.01%
CISA KEVNot currently listed
Published2016-09-22
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Use-after-free vulnerability in the nsRefreshDriver::Tick function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by leveraging improper interaction between timeline destruction and the Web Animations model implementation.

Weakness classification

  • CWE-416: Use After Free

Primary references