CVE-2025-4919 – Mozilla Firefox Out-of-Bounds JavaScript Vulnerability

The following table lists the changes that have been made to the
CVE-2025-4919 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]

    May. 17, 2025

    Action Type Old Value New Value
    Added Description An attacker was able to perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes. This vulnerability affects Firefox ESR < 115.23.1.
    Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1966614
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-38/
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