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firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153

🗓️ 11 Aug 2026 13:56:36Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

Memory safety bugs in Thunderbird ESR 140.12 and Firefox could lead to memory corruption and arbitrary code execution.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.6aarch64thunderbird140.13.0-1.el9_6thunderbird-140.13.0-1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6ppc64lethunderbird140.13.0-1.el9_6thunderbird-140.13.0-1.el9_6.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xthunderbird140.13.0-1.el9_6thunderbird-140.13.0-1.el9_6.s390x.rpm
Red Hat Enterprise Linux9.6x86_64thunderbird140.13.0-1.el9_6thunderbird-140.13.0-1.el9_6.x86_64.rpm
Red Hat Enterprise Linux9.6aarch64thunderbird-debuginfo140.13.0-1.el9_6thunderbird-debuginfo-140.13.0-1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6ppc64lethunderbird-debuginfo140.13.0-1.el9_6thunderbird-debuginfo-140.13.0-1.el9_6.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xthunderbird-debuginfo140.13.0-1.el9_6thunderbird-debuginfo-140.13.0-1.el9_6.s390x.rpm
Red Hat Enterprise Linux9.6x86_64thunderbird-debuginfo140.13.0-1.el9_6thunderbird-debuginfo-140.13.0-1.el9_6.x86_64.rpm
Red Hat Enterprise Linux9.6aarch64thunderbird-debugsource140.13.0-1.el9_6thunderbird-debugsource-140.13.0-1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6ppc64lethunderbird-debugsource140.13.0-1.el9_6thunderbird-debugsource-140.13.0-1.el9_6.ppc64le.rpm
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12 Aug 2026 15:49Current
6Medium risk
Vulners AI Score6
CVSS 3.19.8
EPSS0.00333
SSVC
5