CVE-2025-9181 – Mozilla Firefox JavaScript Engine Uninitialized Memory Vulnerability

The following table lists the changes that have been made to the
CVE-2025-9181 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Aug. 19, 2025

    Action Type Old Value New Value
    Added Description Uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 142, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.
    Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1977130
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-64/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-66/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-67/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-70/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-71/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-72/
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