CVE-2025-30403 – Mvfst QUIC Heap Buffer Overflow

The following table lists the changes that have been made to the
CVE-2025-30403 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]

    Jul. 11, 2025

    Action Type Old Value New Value
    Added Description A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.
    Added Reference https://github.com/facebook/mvfst/commit/65b297332191de6e867c4a3139a233fc84c0e7e0
    Added Reference https://www.facebook.com/security/advisories/cve-2025-30403
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