CVE-2022-28289: Mozilla developers and community members Nika Layzell, Andrew McCreight, Gabriele Svelto, and the Mozilla Fuzzing Team reported memory safe…

Patch / fix

fixed in 3 distros 9

Mozilla Thunderbird 91.8
Mozilla Firefox 99
Mozilla Firefox ESR 91.8

debian ubuntu red hat suse opensuse almalinux rocky linux alpine arch linux

firefox-esr Debian 14, Debian 13, Debian 12 91.8.0esr-1
thunderbird Debian 14, Debian 13, Debian 12 1:91.8.0-1

debian advisories DEBIAN-CVE-2022-28289

firefox Ubuntu 18.04 LTS 99.0+build2-0ubuntu0.18.04.2
firefox Ubuntu 20.04 LTS 99.0+build2-0ubuntu0.20.04.2
firefox Ubuntu 22.04 LTS 1:1snap1-0ubuntu1
thunderbird Ubuntu 18.04 LTS 1:91.8.1+build1-0ubuntu0.18.04.1
thunderbird Ubuntu 20.04 LTS 1:91.8.1+build1-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2022-28289

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

thunderbird RHEL 8 91.8.0-1.el8_5
thunderbird RHEL 7 91.8.0-1.el7_9
firefox RHEL 7 91.8.0-1.el7_9
firefox RHEL 8 91.8.0-1.el8_5
thunderbird RHEL 8.2 EUS 91.8.0-1.el8_2
thunderbird RHEL 8.4 EUS 91.8.0-1.el8_4
thunderbird RHEL 8.1 E4S 91.8.0-1.el8_1
firefox RHEL 8.4 EUS 91.8.0-1.el8_4

red hat advisories RHSA-2022:1326 RHSA-2022:1305 RHSA-2022:1301 RHSA-2022:1303 RHSA-2022:1302 RHSA-2022:1284

MozillaThunderbird SLE Workstation Extension 15 SP3, SLE Module for Package Hub 15 SP4, SLE Module for Package Hub 15 SP3 +1 more 91.8.0-150200.8.65.1
MozillaFirefox SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +8 more 91.8.0-150200.152.26.1
MozillaFirefox SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 91.8.0-150000.150.27.1
MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 91.8.0-112.98.1
MozillaFirefox SLES 11 SP4-LTSS 91.8.0-78.170.1

suse advisories SUSE-SU-2022:1176-1 SUSE-SU-2022:1127-1 SUSE-RU-2022:1125-1 SUSE-RU-2022:1114-1 SUSE-RU-2022:14935-1

firefox-esr openSUSE Tumbleweed 128.5.1-1.1
MozillaFirefox openSUSE Tumbleweed 99.0-1.1
MozillaFirefox openSUSE Leap 15.3 91.8.0-150200.152.26.1

opensuse advisories openSUSE-SU-2024:14572-1 openSUSE-SU-2024:11975-1 openSUSE-SU-2022:1127-1

thunderbird AlmaLinux 8 91.8.0-1.el8_5.alma
thunderbird AlmaLinux 8 91.8.0-1.el8_5.alma.plus
firefox AlmaLinux 8 91.8.0-1.el8_5.alma

almalinux advisories ALSA-2022:1301 ALSA-2022:1287

thunderbird Rocky Linux 8 91.8.0-1.el8_5
firefox Rocky Linux 8 91.8.0-1.el8_5

rocky linux advisories RLSA-2022:1301 RLSA-2022:1287

firefox Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 99.0-r0
librewolf Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 99.0-r0
firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +6 more 91.8.0-r0
thunderbird Alpine 3.23, Alpine 3.22, Alpine 3.21 +5 more 91.8.0-r0

alpine advisories ALPINE-CVE-2022-28289

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 99.0-1

arch linux advisories AVG-2711

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-28289 updated 2026-11-04 cvss 8.8

Mozilla: Memory safety bugs fixed in Firefox 99 and Firefox ESR 91.8

Red Hat Enterprise Linux 6 firefox, thunderbird
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux AppStream (v. 8) firefox 91.8.0-1.el8_5, thunderbird 91.8.0-1.el8_5
fixed: vendor fix RHSA-2022:1287
Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox 91.8.0-1.el8_1, thunderbird 91.8.0-1.el8_1
fixed: vendor fix RHSA-2022:1283
Red Hat Enterprise Linux AppStream EUS (v. 8.2) firefox 91.8.0-1.el8_2, thunderbird 91.8.0-1.el8_2
fixed: vendor fix RHSA-2022:1286
Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox 91.8.0-1.el8_4, thunderbird 91.8.0-1.el8_4
fixed: vendor fix RHSA-2022:1285
Red Hat Enterprise Linux Client (v. 7) firefox 91.8.0-1.el7_9, thunderbird 91.8.0-1.el7_9 Red Hat Enterprise Linux Client Optional (v. 7) firefox 91.8.0-1.el7_9 Red Hat Enterprise Linux Server (v. 7) firefox 91.8.0-1.el7_9 Red Hat Enterprise Linux Server Optional (v. 7) firefox 91.8.0-1.el7_9, thunderbird 91.8.0-1.el7_9 Red Hat Enterprise Linux Workstation (v. 7) firefox 91.8.0-1.el7_9, thunderbird 91.8.0-1.el7_9 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 91.8.0-1.el7_9
fixed: vendor fix RHSA-2022:1284
Red Hat Enterprise Linux 9 firefox, firefox-x11, thunderbird
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

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

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 54% 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 Thunderbird
Mozilla Firefox
Mozilla Firefox ESR

Classification

Weakness

CWE-787 Out-of-bounds Write

References

mozilla.org /security/advisories/mfsa2022-13/
vendor-advisory
mozilla.org /security/advisories/mfsa2022-14/
vendor-advisory
mozilla.org /security/advisories/mfsa2022-15/
vendor-advisory
bugzilla.mozilla.org /buglist.cgi?bug_id=1663508%2C1744525%2C1753508%2C1757476%2C1757805%2C1758549%2C1758776
issue-tracking, vendor-advisory

Sources

CVE List CVE-2022-28289
NVD CVE-2022-28289

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