CVE-2025-4921
Firefox JavaScript Out-of-Bounds Access Vulnerability
Description
Rejected reason: Duplicate of CVE-2025-4919
INFO
Published Date :
May 17, 2025, 10:15 p.m.
Last Modified :
May 18, 2025, 8:15 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
Public PoC/Exploit Available at Github
CVE-2025-4921 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE-2025-4921
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-4921 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-4921 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.
-
CVE Rejected by [email protected]
May. 18, 2025
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 18, 2025
Action Type Old Value New Value Changed 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 < 138.0.4 and Firefox ESR < 128.10.1. Rejected reason: Duplicate of CVE-2025-4919 Removed Reference Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1966614 Removed Reference Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-36/ Removed Reference Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-37/ -
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 < 138.0.4 and Firefox ESR < 128.10.1. Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1966614 Added Reference https://www.mozilla.org/security/advisories/mfsa2025-36/ Added Reference https://www.mozilla.org/security/advisories/mfsa2025-37/
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-4921 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-4921
weaknesses.