CVE-2019-11707CISA KEVEPSS p98.4%

CVE-2019-11707Mozilla Firefox and Thunderbird Type Confusion Vulnerability

Mozilla / Firefox and Thunderbird

Description

Mozilla Firefox and Thunderbird contain a type confusion vulnerability that can occur when manipulating JavaScript objects due to issues in Array.pop, allowing for an exploitable crash.

Scoring

EPSS37.95% probability of exploitation · percentile 98.4% · 2026-06-18T12:00:27Z

CISA KEV entry

Added to KEV: 2022-05-23

(incoming)1

TypeTargetConfidenceTier
KEVEntryMozilla Firefox and Thunderbird Type Confusion Vulnerabilitykev-cve-2019-117070%live

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Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.