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Vulnerability record · CVE-2023-29537 · published 2 June 2023

CVE-2023-29537: Mozilla firefox race condition vulnerability

Mozilla · Firefox

Multiple race conditions in the font initialization could have led to memory corruption and execution of attacker-controlled code. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

7.5 CVSS 3.1 High EPSS 0.56% · top 55.9% CWE-362 · Race condition
7.5CVSS 3.1 base score
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References
19 Aug 2026Last modified by NVD

Description

Multiple race conditions in the font initialization could have led to memory corruption and execution of attacker-controlled code. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

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

Affected products

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

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=1823365 Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1824200 Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1825569 Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2023-13/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1823365 Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1824200 Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1825569 Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2023-13/ Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-29537), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.