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Case File

CVE-2016-5277

CRITICAL · CVSS 9.8 EPSS 4.01%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2016-09-22 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Firefox. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2016-5277
Severity
CRITICAL
CVSS
9.8
EPSS
4.01%
Firefox

Original NVD 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.