CVE-2019-17026CISA KEVEPSS p98.8%

CVE-2019-17026Mozilla Firefox And Thunderbird Type Confusion Vulnerability

Mozilla / Firefox and Thunderbird

Description

Mozilla Firefox and Thunderbird contain a type confusion vulnerability due to incorrect alias information in the IonMonkey JIT compiler when setting array elements.

Scoring

EPSS46.31% probability of exploitation · percentile 98.8% · 2026-10-03T12:00:21Z

CISA KEV entry

Added to KEV: 2021-11-03

(incoming)1

TypeTargetConfidenceTier
KEVEntryMozilla Firefox And Thunderbird Type Confusion Vulnerabilitykev-cve-2019-170260%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.