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Vulnerability record · CVE-2024-29943 · published 22 March 2024

CVE-2024-29943: Mozilla firefox out-of-bounds read vulnerability

Mozilla · Firefox

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.

9.8 CVSS 3.1 Critical EPSS 23% · top 2.3% CWE-125 · Out-of-bounds readCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score
23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2024/03/23/1 Mailing ListThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1886849 Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2024-15/ Vendor Advisory
http://www.openwall.com/lists/oss-security/2024/03/23/1 Mailing ListThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1886849 Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2024-15/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2024-29943), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.