CVE-2019-9814 json
Mozilla developers and community members reported memory safety bugs present in Firefox 66.
published 2019-07-23 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-19176
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
Mozilla developers and community members reported memory safety bugs present in Firefox 66. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 67.
Patch / fix
- Mozilla Firefox 67
- firefox Ubuntu 16.04 LTS 67.0+build2-0ubuntu0.16.04.1
- firefox Ubuntu 18.04 LTS 67.0+build2-0ubuntu0.18.04.1
ubuntu advisories UBUNTU-CVE-2019-9814
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- firefox-esr openSUSE Tumbleweed 128.5.1-1.1
- MozillaFirefox openSUSE Tumbleweed 92.0-1.2
opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10600-1
- firefox Arch Linux 67.0-1
arch linux advisories AVG-966
Exploit prediction
1.28% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Mozilla Firefox
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
Sources
- CVE List CVE-2019-9814
- NVD CVE-2019-9814
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