Mozilla developers and community members Gabriele Svelto, Sebastian Hengst, Randell Jesup, Luan Herrera, Lars T Hansen, and the Mozilla Fuz…

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-15640

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

Mozilla developers and community members Gabriele Svelto, Sebastian Hengst, Randell Jesup, Luan Herrera, Lars T Hansen, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 96. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 97.

Patch / fix

fixed in 1 distros 3

Mozilla Firefox 97

ubuntu opensuse alpine

firefox Ubuntu 18.04 LTS 97.0+build2-0ubuntu0.18.04.1
firefox Ubuntu 20.04 LTS 97.0+build2-0ubuntu0.20.04.1
firefox Ubuntu 22.04 LTS 97.0+build2-0ubuntu1

ubuntu advisories UBUNTU-CVE-2022-0511

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 97.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1 openSUSE-SU-2024:11837-1

firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 97.0-r0
librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 97.0-r0

alpine advisories ALPINE-CVE-2022-0511

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-16)

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Mozilla Firefox

Classification

Weakness

CWE-787 Out-of-bounds Write

References

mozilla.org /security/advisories/mfsa2022-04/
vendor-advisory
bugzilla.mozilla.org /buglist.cgi?bug_id=1713579%2C1735448%2C1743821%2C1746313%2C1746314%2C1746316%2C1746321%2C1746322%2C1746323%2C
issue-tracking, vendor-advisory

Sources

CVE List CVE-2022-0511
NVD CVE-2022-0511

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary