Red Hat Security Advisory: firefox security update
A security advisory from Red Hat addresses multiple vulnerabilities in Mozilla Firefox and Thunderbird, including a double-free bug in libvpx, clickjacking leading to potential leakage of saved payment card details, local code execution risks, memory safety bugs, and improper isolation of script execution errors from web content. These issues collectively pose a high security impact and affect Red Hat Enterprise Linux 8.6 variants. The advisory provides updated packages to remediate these vulnerabilities.
AI Analysis
Technical Summary
Red Hat Product Security issued an important security update (RHSA-2025:9155) for Mozilla Firefox and Thunderbird on Red Hat Enterprise Linux 8.6. The update addresses seven vulnerabilities: a double-free in the libvpx encoder (CVE-2025-5283), a clickjacking vulnerability that could leak saved payment card details (CVE-2025-5267), potential local code execution via the 'Copy as cURL' command (CVE-2025-5264), multiple memory safety bugs (CVE-2025-5268, CVE-2025-5269), leakage of cross-origin resource status through script element events (CVE-2025-5266), and incorrect isolation of error handling for script execution from web content (CVE-2025-5263). The advisory references updated Firefox packages version 128.11.0-1.el8_6 for various Red Hat Enterprise Linux 8.6 product variants. No CVSS scores are provided in the advisory, but the overall impact is rated as important (high).
Potential Impact
The vulnerabilities collectively could lead to information leakage (such as saved payment card details), local code execution, and memory safety issues that may compromise the security and stability of Firefox and Thunderbird on affected Red Hat Enterprise Linux systems. The clickjacking vulnerability specifically risks exposing sensitive user data, while memory safety bugs and improper error isolation could be exploited to execute arbitrary code or cause application crashes.
Mitigation Recommendations
Red Hat has released updated Firefox packages for Red Hat Enterprise Linux 8.6 variants that address these vulnerabilities. Users should apply the updates as described in the Red Hat advisory RHSA-2025:9155 and the referenced article https://access.redhat.com/articles/11258 to remediate the issues. No additional mitigation steps are indicated beyond applying the official patches.
Red Hat Security Advisory: firefox security update
Description
A security advisory from Red Hat addresses multiple vulnerabilities in Mozilla Firefox and Thunderbird, including a double-free bug in libvpx, clickjacking leading to potential leakage of saved payment card details, local code execution risks, memory safety bugs, and improper isolation of script execution errors from web content. These issues collectively pose a high security impact and affect Red Hat Enterprise Linux 8.6 variants. The advisory provides updated packages to remediate these vulnerabilities.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security issued an important security update (RHSA-2025:9155) for Mozilla Firefox and Thunderbird on Red Hat Enterprise Linux 8.6. The update addresses seven vulnerabilities: a double-free in the libvpx encoder (CVE-2025-5283), a clickjacking vulnerability that could leak saved payment card details (CVE-2025-5267), potential local code execution via the 'Copy as cURL' command (CVE-2025-5264), multiple memory safety bugs (CVE-2025-5268, CVE-2025-5269), leakage of cross-origin resource status through script element events (CVE-2025-5266), and incorrect isolation of error handling for script execution from web content (CVE-2025-5263). The advisory references updated Firefox packages version 128.11.0-1.el8_6 for various Red Hat Enterprise Linux 8.6 product variants. No CVSS scores are provided in the advisory, but the overall impact is rated as important (high).
Potential Impact
The vulnerabilities collectively could lead to information leakage (such as saved payment card details), local code execution, and memory safety issues that may compromise the security and stability of Firefox and Thunderbird on affected Red Hat Enterprise Linux systems. The clickjacking vulnerability specifically risks exposing sensitive user data, while memory safety bugs and improper error isolation could be exploited to execute arbitrary code or cause application crashes.
Mitigation Recommendations
Red Hat has released updated Firefox packages for Red Hat Enterprise Linux 8.6 variants that address these vulnerabilities. Users should apply the updates as described in the Red Hat advisory RHSA-2025:9155 and the referenced article https://access.redhat.com/articles/11258 to remediate the issues. No additional mitigation steps are indicated beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:9155
- Cve Count
- 7
- Additional Cves
- ["CVE-2025-5264","CVE-2025-5266","CVE-2025-5267","CVE-2025-5268","CVE-2025-5269","CVE-2025-5283"]
Threat ID: 6a4049e027e9c79719832183
Added to database: 06/27/2026, 22:08:32 UTC
Last enriched: 06/27/2026, 22:27:52 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 16
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