CVE-2016-2838: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 4.5% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the nsBidi::BracketData::AddOpening function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via directional content in an SVG document.

Affected products

• Mozilla Firefox: up to and including 47.0.1; version 45.1.0 only; version 45.1.1 only; version 45.2.0 only; version 45.3.0 only

Published 2016-08-05. Last modified 2026-06-17.