Red Hat Security Advisory: firefox security update
Multiple memory safety and security vulnerabilities have been identified in Mozilla Firefox and Thunderbird, including use-after-free, out-of-bounds read/write, cross-process information leaks, and improper handling of object properties. These issues affect Red Hat Enterprise Linux 8 versions of Firefox and Thunderbird and have been addressed in updated packages. The vulnerabilities are rated as important by Red Hat Product Security. Users are advised to apply the available security updates to mitigate these issues.
AI Analysis
Technical Summary
This Red Hat security advisory addresses several vulnerabilities in Mozilla Firefox and Thunderbird, including CVE-2025-11708 (use-after-free in MediaTrackGraphImpl::GetInstance), CVE-2025-11709 (out-of-bounds read/write triggered by WebGL textures), CVE-2025-11710 (cross-process information leak via malicious IPC messages), CVE-2025-11711 (modification of non-writable object properties), CVE-2025-11712 (OBJECT tag type attribute overriding browser behavior), CVE-2025-11714 and CVE-2025-11715 (memory safety bugs). These vulnerabilities affect Red Hat Enterprise Linux 8 Firefox and Thunderbird packages and have been fixed in Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144, and Thunderbird 144. The advisory provides updated packages for multiple architectures and extended life cycle versions. No known exploits in the wild have been reported.
Potential Impact
Successful exploitation of these vulnerabilities could lead to memory corruption, information disclosure, and potential privilege escalation within the Firefox or Thunderbird processes. The issues include use-after-free, out-of-bounds memory access, and IPC message manipulation, which may compromise browser security and user data confidentiality. Red Hat rates the security impact as Important, indicating a high risk if unpatched.
Mitigation Recommendations
Red Hat has released updated Firefox and Thunderbird packages for Red Hat Enterprise Linux 8 and its extended life cycle variants that address these vulnerabilities. Users should apply these official security updates promptly. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigations are specified beyond applying the provided patches.
Red Hat Security Advisory: firefox security update
Description
Multiple memory safety and security vulnerabilities have been identified in Mozilla Firefox and Thunderbird, including use-after-free, out-of-bounds read/write, cross-process information leaks, and improper handling of object properties. These issues affect Red Hat Enterprise Linux 8 versions of Firefox and Thunderbird and have been addressed in updated packages. The vulnerabilities are rated as important by Red Hat Product Security. Users are advised to apply the available security updates to mitigate these issues.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory addresses several vulnerabilities in Mozilla Firefox and Thunderbird, including CVE-2025-11708 (use-after-free in MediaTrackGraphImpl::GetInstance), CVE-2025-11709 (out-of-bounds read/write triggered by WebGL textures), CVE-2025-11710 (cross-process information leak via malicious IPC messages), CVE-2025-11711 (modification of non-writable object properties), CVE-2025-11712 (OBJECT tag type attribute overriding browser behavior), CVE-2025-11714 and CVE-2025-11715 (memory safety bugs). These vulnerabilities affect Red Hat Enterprise Linux 8 Firefox and Thunderbird packages and have been fixed in Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144, and Thunderbird 144. The advisory provides updated packages for multiple architectures and extended life cycle versions. No known exploits in the wild have been reported.
Potential Impact
Successful exploitation of these vulnerabilities could lead to memory corruption, information disclosure, and potential privilege escalation within the Firefox or Thunderbird processes. The issues include use-after-free, out-of-bounds memory access, and IPC message manipulation, which may compromise browser security and user data confidentiality. Red Hat rates the security impact as Important, indicating a high risk if unpatched.
Mitigation Recommendations
Red Hat has released updated Firefox and Thunderbird packages for Red Hat Enterprise Linux 8 and its extended life cycle variants that address these vulnerabilities. Users should apply these official security updates promptly. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigations are specified beyond applying the provided 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-2025:18285
- Cve Count
- 7
- Additional Cves
- ["CVE-2025-11709","CVE-2025-11710","CVE-2025-11711","CVE-2025-11712","CVE-2025-11714","CVE-2025-11715"]
Threat ID: 6a419cb027e9c79719abb0f0
Added to database: 06/28/2026, 22:14:08 UTC
Last enriched: 06/28/2026, 22:26:03 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 24
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