Red Hat Security Advisory: thunderbird security update
Multiple security vulnerabilities affecting Mozilla Thunderbird have been addressed in a Red Hat security update. These include denial-of-service, sandbox escape, same-origin policy bypass, uninitialized memory, and memory safety bugs. The update fixes issues in various components such as Graphics WebRender, Audio/Video GMP, Graphics Canvas2D, and the JavaScript Engine. The vulnerabilities impact Red Hat Enterprise Linux 8 and its Extended Life Cycle variants across multiple architectures. The update is rated as Important by Red Hat Product Security.
AI Analysis
Technical Summary
This Red Hat security advisory addresses five vulnerabilities in Mozilla Thunderbird and Firefox components integrated within Thunderbird. The issues include a denial-of-service caused by out-of-memory in the Graphics WebRender component (CVE-2025-9182), a sandbox escape due to an invalid pointer in the Audio/Video GMP component (CVE-2025-9179), a same-origin policy bypass in the Graphics Canvas2D component (CVE-2025-9180), uninitialized memory usage in the JavaScript Engine component (CVE-2025-9181), and multiple memory safety bugs fixed in recent ESR and standard releases (CVE-2025-9185). Red Hat has released updated Thunderbird packages for Red Hat Enterprise Linux 8 and its Extended Life Cycle versions on multiple architectures to remediate these vulnerabilities.
Potential Impact
The vulnerabilities collectively could allow denial-of-service conditions, sandbox escapes, bypassing of same-origin policy restrictions, and memory safety issues, which may lead to potential security breaches or instability in the Thunderbird mail client. The severity is rated as Important by Red Hat, indicating a high impact on confidentiality, integrity, or availability if exploited.
Mitigation Recommendations
Red Hat has released updated Thunderbird packages for Red Hat Enterprise Linux 8 and Extended Life Cycle 8.10 across all supported architectures. Users should apply these official updates promptly to remediate the vulnerabilities. For detailed update instructions, refer to Red Hat's advisory at https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are specified.
Red Hat Security Advisory: thunderbird security update
Description
Multiple security vulnerabilities affecting Mozilla Thunderbird have been addressed in a Red Hat security update. These include denial-of-service, sandbox escape, same-origin policy bypass, uninitialized memory, and memory safety bugs. The update fixes issues in various components such as Graphics WebRender, Audio/Video GMP, Graphics Canvas2D, and the JavaScript Engine. The vulnerabilities impact Red Hat Enterprise Linux 8 and its Extended Life Cycle variants across multiple architectures. The update is rated as Important by Red Hat Product Security.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory addresses five vulnerabilities in Mozilla Thunderbird and Firefox components integrated within Thunderbird. The issues include a denial-of-service caused by out-of-memory in the Graphics WebRender component (CVE-2025-9182), a sandbox escape due to an invalid pointer in the Audio/Video GMP component (CVE-2025-9179), a same-origin policy bypass in the Graphics Canvas2D component (CVE-2025-9180), uninitialized memory usage in the JavaScript Engine component (CVE-2025-9181), and multiple memory safety bugs fixed in recent ESR and standard releases (CVE-2025-9185). Red Hat has released updated Thunderbird packages for Red Hat Enterprise Linux 8 and its Extended Life Cycle versions on multiple architectures to remediate these vulnerabilities.
Potential Impact
The vulnerabilities collectively could allow denial-of-service conditions, sandbox escapes, bypassing of same-origin policy restrictions, and memory safety issues, which may lead to potential security breaches or instability in the Thunderbird mail client. The severity is rated as Important by Red Hat, indicating a high impact on confidentiality, integrity, or availability if exploited.
Mitigation Recommendations
Red Hat has released updated Thunderbird packages for Red Hat Enterprise Linux 8 and Extended Life Cycle 8.10 across all supported architectures. Users should apply these official updates promptly to remediate the vulnerabilities. For detailed update instructions, refer to Red Hat's advisory at https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are specified.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:14743
- Cve Count
- 5
- Additional Cves
- ["CVE-2025-9180","CVE-2025-9181","CVE-2025-9182","CVE-2025-9185"]
- Cvss Version
- null
Threat ID: 6a3cc29d4853345fc16d3835
Added to database: 06/25/2026, 05:54:37 UTC
Last enriched: 06/25/2026, 06:16:18 UTC
Last updated: 06/25/2026, 13:00:48 UTC
Views: 4
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