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CVE-2019-11707: Mozilla Firefox and Thunderbird Type Confusion Vulnerability
Mozilla Firefox and Thunderbird · in CISA KEV since 2022-05-23
2022-05-23added to KEV
2022-06-13federal remediation due date
37.70%EPSS exploit probability (30 days) 98.5th percentile
8.8 HIGHCVSS 3.1
Unknownknown ransomware use
1,035days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-843 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD published | 2019-07-23 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2019-11707.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.