CVE-2025-1013
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
A race condition could have led to private browsing tabs being opened in normal browsing windows. This could have resulted in a potential privacy leak. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
Risk Assessment
A user may unknowingly conduct private sessions in normal windows, potentially leading to exposure of personal or business data. The risk affects users prior to updating.
Recommendation
Update Firefox to version 135 (or ESR 128.7) and Thunderbird to version 135 (or 128.7). Notify users about the need to update.
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Original NVD description (English source)
A race condition could have led to private browsing tabs being opened in normal browsing windows. This could have resulted in a potential privacy leak. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS