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thunderbird: firefox: Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2

🗓️ 05 May 2026 06:33:31Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 8 Views

Memory safety bugs fixed in Firefox and Thunderbird updates; prior flaws could allow code execution.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.0aarch64firefox0:140.9.1-1.el9_0firefox-0:140.9.1-1.el9_0.aarch64.rpm
Red Hat Enterprise Linux9.0ppc64lefirefox0:140.9.1-1.el9_0firefox-0:140.9.1-1.el9_0.ppc64le.rpm
Red Hat Enterprise Linux9.0s390xfirefox0:140.9.1-1.el9_0firefox-0:140.9.1-1.el9_0.s390x.rpm
Red Hat Enterprise Linux9.0x86_64firefox0:140.9.1-1.el9_0firefox-0:140.9.1-1.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0aarch64firefox-debuginfo0:140.9.1-1.el9_0firefox-debuginfo-0:140.9.1-1.el9_0.aarch64.rpm
Red Hat Enterprise Linux9.0ppc64lefirefox-debuginfo0:140.9.1-1.el9_0firefox-debuginfo-0:140.9.1-1.el9_0.ppc64le.rpm
Red Hat Enterprise Linux9.0s390xfirefox-debuginfo0:140.9.1-1.el9_0firefox-debuginfo-0:140.9.1-1.el9_0.s390x.rpm
Red Hat Enterprise Linux9.0x86_64firefox-debuginfo0:140.9.1-1.el9_0firefox-debuginfo-0:140.9.1-1.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0aarch64firefox-debugsource0:140.9.1-1.el9_0firefox-debugsource-0:140.9.1-1.el9_0.aarch64.rpm
Red Hat Enterprise Linux9.0ppc64lefirefox-debugsource0:140.9.1-1.el9_0firefox-debugsource-0:140.9.1-1.el9_0.ppc64le.rpm
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04 Jul 2026 15:49Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.8 - 9.8
EPSS0.00329
SSVC
8