Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-1727-1 | firefox-esr security update |
Debian DSA |
DSA-4417-1 | firefox-esr security update |
Ubuntu USN |
USN-3919-1 | Firefox vulnerabilities |
Ubuntu USN |
USN-3927-1 | Thunderbird vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 25 Nov 2025 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | ||
| Vendors & Products |
Mozilla firefox Esr
|
Projects
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Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2024-08-04T22:01:54.683Z
Reserved: 2019-03-14T00:00:00
Link: CVE-2019-9813
No data.
Status : Modified
Published: 2019-04-26T17:29:04.163
Modified: 2025-11-25T17:50:16.803
Link: CVE-2019-9813
OpenCVE Enrichment
No data.
Weaknesses
Debian DLA
Debian DSA
Ubuntu USN