{"id":"CVE-2023-29537","title":"Multiple race conditions in the font initialization could have led to memory corruption and execution of attacker-controlled code","summary":"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.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-362"],"vendor":"mozilla","product":"firefox","affected":["firefox < 112.0","firefox_mobile < 112.0","focus < 112.0"],"patched":["firefox 112.0","firefox_mobile 112.0","focus 112.0"],"published":"2023-06-02","updated":"2026-08-19","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-29537","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1823365","label":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1824200","label":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1825569","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-13/","label":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1823365","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1824200","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1825569","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-13/","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00556,"epssPercentile":0.45205,"ingestedAt":"2026-08-19T15:41:15.512Z","slug":"CVE-2023-29537","body":"## Overview\n\nMultiple 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.\n\n## Affected\n\n- `firefox < 112.0`\n- `firefox_mobile < 112.0`\n- `focus < 112.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 112.0`\n- `firefox_mobile 112.0`\n- `focus 112.0`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}