CISA Known Exploited Vulnerability

CVE-2019-17026

Mozilla · Firefox and Thunderbird

Mozilla Firefox And Thunderbird Type Confusion Vulnerability

Date added 2021-11-03

BOD 22-01 due date 2022-05-03

CWE CWE-843

Ransomware Unknown

CISA description

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

Required action

Apply updates per vendor instructions.

Notes & references

https://nvd.nist.gov/vuln/detail/CVE-2019-17026

Where this lands in 800-53

Vulnerability data triggers these controls during assessment and continuous monitoring.

RA-5 · Vulnerability Monitoring and Scanning
SI-2 · Flaw Remediation
CM-6 · Configuration Settings
SI-7 · Software, Firmware, and Information Integrity
CM-8 · System Component Inventory

External lookups

NVD · CVE-2019-17026
CVE.org · CVE-2019-17026
CISA KEV catalog (canonical)