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firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15

🗓️ 24 Sep 2026 02:21:38Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Internally found memory corruption and security-relevant defects in Firefox.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-84143
1 Sep 202612:19
–alpinelinux
almalinux
AlmaLinux
Important: firefox security update
14 Sep 202600:00
–almalinux
almalinux
AlmaLinux
Important: firefox security update
17 Sep 202600:00
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cgr
Chainguard
CVE-2026-84143 vulnerabilities
5 Sep 202602:17
–cgr
circl
Circl
CVE-2026-84143
2 Sep 202604:47
–circl
cve
CVE
CVE-2026-84143
1 Sep 202612:19
–cve
cvelist
Cvelist
CVE-2026-84143 Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15
1 Sep 202612:19
–cvelist
debian
Debian
[SECURITY] [DLA 4770-1] firefox-esr security update
4 Sep 202608:03
–debian
debian
Debian
[SECURITY] [DLA 4775-1] thunderbird security update
7 Sep 202610:00
–debian
debian
Debian
[SECURITY] [DSA 6481-1] firefox-esr security update
2 Sep 202620:59
–debian
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.8aarch64thunderbird140.16.0-1.el9_8thunderbird-140.16.0-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64lethunderbird140.16.0-1.el9_8thunderbird-140.16.0-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xthunderbird140.16.0-1.el9_8thunderbird-140.16.0-1.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64thunderbird140.16.0-1.el9_8thunderbird-140.16.0-1.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64thunderbird-debuginfo140.16.0-1.el9_8thunderbird-debuginfo-140.16.0-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64lethunderbird-debuginfo140.16.0-1.el9_8thunderbird-debuginfo-140.16.0-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xthunderbird-debuginfo140.16.0-1.el9_8thunderbird-debuginfo-140.16.0-1.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64thunderbird-debuginfo140.16.0-1.el9_8thunderbird-debuginfo-140.16.0-1.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64thunderbird-debugsource140.16.0-1.el9_8thunderbird-debugsource-140.16.0-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64lethunderbird-debugsource140.16.0-1.el9_8thunderbird-debugsource-140.16.0-1.el9_8.ppc64le.rpm
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24 Sep 2026 18:16Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.19.8
EPSS0.00378
SSVC
3