There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability affects Firefox < 144, Firefox ESR < 115.29, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4.
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2025:18154 https://access.redhat.com/errata/RHSA-2025:18154
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2025:18155 https://access.redhat.com/errata/RHSA-2025:18155
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2025:18285 https://access.redhat.com/errata/RHSA-2025:18285
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2025:18320 https://access.redhat.com/errata/RHSA-2025:18320
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2025:18321 https://access.redhat.com/errata/RHSA-2025:18321
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2025:18983 https://access.redhat.com/errata/RHSA-2025:18983
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2025:19278 https://access.redhat.com/errata/RHSA-2025:19278
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2025:19939 https://access.redhat.com/errata/RHSA-2025:19939
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat Enterprise Linux 8.6 Telecommunications Update Service Via RHSA-2025:19941 https://access.redhat.com/errata/RHSA-2025:19941
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2025:19942 https://access.redhat.com/errata/RHSA-2025:19942
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2025:19945 https://access.redhat.com/errata/RHSA-2025:19945
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2025:19943 https://access.redhat.com/errata/RHSA-2025:19943
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Via RHSA-2025:19938 https://access.redhat.com/errata/RHSA-2025:19938
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2025:19944 https://access.redhat.com/errata/RHSA-2025:19944
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Via RHSA-2025:21054 https://access.redhat.com/errata/RHSA-2025:21054
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2025:21055 https://access.redhat.com/errata/RHSA-2025:21055
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat Enterprise Linux 8.6 Telecommunications Update Service Via RHSA-2025:21056 https://access.redhat.com/errata/RHSA-2025:21056
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2025:21058 https://access.redhat.com/errata/RHSA-2025:21058
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2025:21057 https://access.redhat.com/errata/RHSA-2025:21057
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2025:21059 https://access.redhat.com/errata/RHSA-2025:21059
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2025:21064 https://access.redhat.com/errata/RHSA-2025:21064