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Vulnerability DatabaseCVE-2025-10534
CVE-2025-10534:
NixOS vulnerability analysis and mitigation
Overview
CVE-2025-10534 is a spoofing vulnerability discovered in the Site Permissions component affecting Firefox versions prior to 143 and Thunderbird versions prior to 143. The vulnerability was reported by Emma Zühlcke and was publicly disclosed on September 16, 2025 (Mozilla Advisory).
Technical details
The vulnerability has been classified as a spoofing issue specifically affecting the Site Permissions component in Firefox and Thunderbird. Mozilla has assessed this vulnerability as having a low impact severity (Mozilla Advisory).
Impact
The vulnerability has been rated with low severity impact. In Thunderbird, the vulnerability cannot be exploited through email as scripting is disabled when reading mail, but it potentially poses risks in browser or browser-like contexts (Mozilla Advisory).
Mitigation and workarounds
The vulnerability has been fixed in Firefox 143 and Thunderbird 143. Users are advised to upgrade to these versions to receive the security fix (Mozilla Advisory, Mozilla Advisory).
Additional resources
Source: This report was generated using AI
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