CVE-2024-29943
CWE-125Published: March 22, 2024· Updated: Jun 17, 2026
Official Description
An attacker was able to perform an out-of-bounds read or write on a JavaScript object by fooling range-based bounds check elimination. This vulnerability affects Firefox < 124.0.1.
Risk Analysis
A critical memory safety vulnerability in Firefox allows for out-of-bounds read or write operations by bypassing bounds checks. This flaw could be leveraged to compromise the browser environment.
No public exploit is currently known, and it is not in CISA KEV. The vulnerability is remotely exploitable with low complexity.
Update Firefox to version 124.0.1 or later to mitigate this risk.
Technical Analysis
CVE-2024-29943 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (6)
Quick Facts
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2024-29943 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts