CISA KEV

CVE-2019-11707

Mozilla Firefox and Thunderbird Type Confusion Vulnerability

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.

VendorMozilla

ProductFirefox and Thunderbird

EPSS37.7%

Added to KEVMay 23, 2022

Remediation DueJun 13, 2022

Known Ransomware UseUnknown

CWECWE-843

Required Action

Apply updates per vendor instructions.

From Disclosure to Action

Know how quickly you need to move.

For CVE-2019-11707, added to the catalogue on May 23, 2022 with a remediation deadline of Jun 13, 2022.

Added to KEVMay 23, 2022

Seraph AlertSame day

Remediation DueJun 13, 2022

ValidationOngoing

Overdue1598 days overdue

Recommended action: Apply vendor remediation guidance.

Seraph Context

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References

https://nvd.nist.gov/vuln/detail/CVE-2019-11707

More from Mozilla in the KEV catalogue.

CVE-2010-3765Multiple ProductsAdded Oct 06, 2025 CVE-2024-9680FirefoxAdded Oct 15, 2024 CVE-2016-9079Firefox, Firefox ESR, and ThunderbirdAdded Jun 22, 2023

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