Mozilla Firefox And Thunderbird Type Confusion Vulnerability

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

cat cve-2019-17026.json

Vendor: Mozilla
Product: Firefox and Thunderbird
CVSS: 8.8
EPSS (exploit probability): 43.7%
Status: kev
CISA patch-by (BOD 22-01): May 3, 2022
Published: November 3, 2021
Source: https://nvd.nist.gov/vuln/detail/CVE-2019-17026

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

Added to CISA’s Known Exploited Vulnerabilities catalog on 2021-11-03. Required action per CISA: Apply updates per vendor instructions. Due date: 2022-05-03.

This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.