CVE-2023-29536

An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-controlled memory, resulting in an assertion, memory corruption, or 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

8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2023-06-02

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• mozilla:firefox
• mozilla:firefox_esr
• mozilla:firefox_mobile
• mozilla:focus
• mozilla:thunderbird

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1821959
• https://www.mozilla.org/security/advisories/mfsa2023-13/
• https://www.mozilla.org/security/advisories/mfsa2023-14/
• https://www.mozilla.org/security/advisories/mfsa2023-15/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1821959

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