Red Hat Security Advisory: thunderbird security update
Multiple security vulnerabilities have been identified and addressed in Mozilla Thunderbird as packaged for Red Hat Enterprise Linux 10. These include issues such as UI misrepresentation of attachment URLs, information disclosure of the /tmp directory listing, leakage of hashed Windows credentials via crafted attachment URLs, privilege escalation in the Firefox Updater component, unsafe attribute access during XPath parsing, process isolation bypass using javascript: URI links in cross-origin frames, and several memory safety bugs. Red Hat has issued an important security advisory with updates to fix these vulnerabilities in Thunderbird version 128.10.0 for various architectures.
AI Analysis
Technical Summary
This Red Hat security advisory addresses multiple vulnerabilities in Mozilla Thunderbird and related Firefox components integrated into Thunderbird. The fixes cover a range of issues: CVE-2025-3523 involves UI misrepresentation of attachment URLs; CVE-2025-2830 concerns information disclosure of the /tmp directory listing; CVE-2025-3522 is about leaking hashed Windows credentials via crafted attachment URLs; CVE-2025-2817 is a privilege escalation vulnerability in the Firefox Updater; CVE-2025-4087 involves unsafe attribute access during XPath parsing; CVE-2025-4083 is a process isolation bypass using javascript: URI links in cross-origin frames; CVE-2025-4091 and CVE-2025-4093 are memory safety bugs fixed in Thunderbird 128.10 and Firefox 138/ESR 128.10. Red Hat has released updated Thunderbird packages (version 128.10.0) for Red Hat Enterprise Linux 10 across multiple architectures to address these issues.
Potential Impact
The vulnerabilities collectively could allow attackers to misrepresent UI elements, disclose sensitive information such as directory listings and hashed credentials, escalate privileges via the updater, bypass process isolation protections, and exploit memory safety bugs potentially leading to crashes or code execution. These issues pose a high security risk to users of affected Thunderbird versions on Red Hat Enterprise Linux 10 systems.
Mitigation Recommendations
Red Hat has released updated Thunderbird packages (version 128.10.0) that address all listed vulnerabilities. Users should apply the security update promptly by following Red Hat's official update instructions at https://access.redhat.com/articles/11258. This update is available for Red Hat Enterprise Linux 10 and its Extended Update Support and Extended Life Cycle variants across supported architectures. No additional mitigations are indicated beyond applying the official update.
Red Hat Security Advisory: thunderbird security update
Description
Multiple security vulnerabilities have been identified and addressed in Mozilla Thunderbird as packaged for Red Hat Enterprise Linux 10. These include issues such as UI misrepresentation of attachment URLs, information disclosure of the /tmp directory listing, leakage of hashed Windows credentials via crafted attachment URLs, privilege escalation in the Firefox Updater component, unsafe attribute access during XPath parsing, process isolation bypass using javascript: URI links in cross-origin frames, and several memory safety bugs. Red Hat has issued an important security advisory with updates to fix these vulnerabilities in Thunderbird version 128.10.0 for various architectures.
Affected software
pkg:rpm/redhat/thunderbirdRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory addresses multiple vulnerabilities in Mozilla Thunderbird and related Firefox components integrated into Thunderbird. The fixes cover a range of issues: CVE-2025-3523 involves UI misrepresentation of attachment URLs; CVE-2025-2830 concerns information disclosure of the /tmp directory listing; CVE-2025-3522 is about leaking hashed Windows credentials via crafted attachment URLs; CVE-2025-2817 is a privilege escalation vulnerability in the Firefox Updater; CVE-2025-4087 involves unsafe attribute access during XPath parsing; CVE-2025-4083 is a process isolation bypass using javascript: URI links in cross-origin frames; CVE-2025-4091 and CVE-2025-4093 are memory safety bugs fixed in Thunderbird 128.10 and Firefox 138/ESR 128.10. Red Hat has released updated Thunderbird packages (version 128.10.0) for Red Hat Enterprise Linux 10 across multiple architectures to address these issues.
Potential Impact
The vulnerabilities collectively could allow attackers to misrepresent UI elements, disclose sensitive information such as directory listings and hashed credentials, escalate privileges via the updater, bypass process isolation protections, and exploit memory safety bugs potentially leading to crashes or code execution. These issues pose a high security risk to users of affected Thunderbird versions on Red Hat Enterprise Linux 10 systems.
Mitigation Recommendations
Red Hat has released updated Thunderbird packages (version 128.10.0) that address all listed vulnerabilities. Users should apply the security update promptly by following Red Hat's official update instructions at https://access.redhat.com/articles/11258. This update is available for Red Hat Enterprise Linux 10 and its Extended Update Support and Extended Life Cycle variants across supported architectures. No additional mitigations are indicated beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:7507
- Cve Count
- 8
- Additional Cves
- ["CVE-2025-2830","CVE-2025-3522","CVE-2025-3523","CVE-2025-4083","CVE-2025-4087","CVE-2025-4091","CVE-2025-4093"]
- Cvss Version
- null
Threat ID: 6a4049e827e9c79719835550
Added to database: 06/27/2026, 22:08:40 UTC
Last enriched: 06/27/2026, 22:36:55 UTC
Last updated: 06/28/2026, 00:51:09 UTC
Views: 3
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