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firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152

🗓️ 25 Jun 2026 16:16:31Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 13 Views

Memory safety fixes in Firefox and Thunderbird across versions 115.37, 140.12, 151, 152 with potential to run arbitrary code.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.8aarch64thunderbird140.12.0-1.el9_8thunderbird-140.12.0-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64lethunderbird140.12.0-1.el9_8thunderbird-140.12.0-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xthunderbird140.12.0-1.el9_8thunderbird-140.12.0-1.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64thunderbird140.12.0-1.el9_8thunderbird-140.12.0-1.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64thunderbird-debuginfo140.12.0-1.el9_8thunderbird-debuginfo-140.12.0-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64lethunderbird-debuginfo140.12.0-1.el9_8thunderbird-debuginfo-140.12.0-1.el9_8.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xthunderbird-debuginfo140.12.0-1.el9_8thunderbird-debuginfo-140.12.0-1.el9_8.s390x.rpm
Red Hat Enterprise Linux9.8x86_64thunderbird-debuginfo140.12.0-1.el9_8thunderbird-debuginfo-140.12.0-1.el9_8.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64thunderbird-debugsource140.12.0-1.el9_8thunderbird-debugsource-140.12.0-1.el9_8.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64lethunderbird-debugsource140.12.0-1.el9_8thunderbird-debugsource-140.12.0-1.el9_8.ppc64le.rpm
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15 Jul 2026 12:48Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.1
EPSS0.00476
SSVC
13