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Fencer Intel
high 8.8

CVE-2022-0843 json

Mozilla developers Kershaw Chang, Ryan VanderMeulen, and Randell Jesup reported memory safety bugs present in Firefox 97.

published 3y ago modified 4mo ago also EUVD-2022-15887

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 47%
public exploits
0
none known

Summary

Mozilla developers Kershaw Chang, Ryan VanderMeulen, and Randell Jesup reported memory safety bugs present in Firefox 97. 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 < 98.

Patch / fix

  • Mozilla Firefox 98
  • firefox Ubuntu 18.04 LTS 98.0+build3-0ubuntu0.18.04.2
  • firefox Ubuntu 20.04 LTS 98.0+build3-0ubuntu0.20.04.2
  • firefox Ubuntu 22.04 LTS 1:1snap1-0ubuntu1

ubuntu advisories UBUNTU-CVE-2022-0843

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 98.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:11908-1

  • firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 98.0-r0
  • librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 98.0-r0

alpine advisories ALPINE-CVE-2022-0843

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

  • firefox Arch Linux 98.0-1

arch linux advisories AVG-2714

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).

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

References

Sources

Fencer Intel 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.