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Vulnerability record · CVE-2023-29535 · published 2 June 2023

CVE-2023-29535: Mozilla firefox vulnerability

Mozilla · Firefox

Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

6.5 CVSS 3.1 Medium EPSS 0.75% · top 47.0%
6.5CVSS 3.1 base score
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
8References
19 Aug 2026Last modified by NVD

Description

Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

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

Affected products

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

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=1820543 Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2023-13/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-14/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-15/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1820543 Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2023-13/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-14/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-15/ Vendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2023-29535), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.