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firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143

🗓️ 06 Oct 2025 01:34:27Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 9 Views

Memory safety fixes for Firefox and Thunderbird across versions 140.3 and 143.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.6aarch64thunderbird140.3.0-1.el8_6thunderbird-140.3.0-1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lethunderbird140.3.0-1.el8_6thunderbird-140.3.0-1.el8_6.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xthunderbird140.3.0-1.el8_6thunderbird-140.3.0-1.el8_6.s390x.rpm
Red Hat Enterprise Linux8.6x86_64thunderbird140.3.0-1.el8_6thunderbird-140.3.0-1.el8_6.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64thunderbird-debuginfo140.3.0-1.el8_6thunderbird-debuginfo-140.3.0-1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lethunderbird-debuginfo140.3.0-1.el8_6thunderbird-debuginfo-140.3.0-1.el8_6.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xthunderbird-debuginfo140.3.0-1.el8_6thunderbird-debuginfo-140.3.0-1.el8_6.s390x.rpm
Red Hat Enterprise Linux8.6x86_64thunderbird-debuginfo140.3.0-1.el8_6thunderbird-debuginfo-140.3.0-1.el8_6.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64thunderbird-debugsource140.3.0-1.el8_6thunderbird-debugsource-140.3.0-1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lethunderbird-debugsource140.3.0-1.el8_6thunderbird-debugsource-140.3.0-1.el8_6.ppc64le.rpm
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30 Jun 2026 02:05Current
7.4High risk
Vulners AI Score7.4
CVSS 3.18.8
EPSS0.00306
SSVC
9