{"id":"CVE-2021-29968","aliases":["EUVD-2021-16427","GHSA-88p3-h3gw-7xj6"],"status":"published","title":"When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This...","description":"When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 89.0.1.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00826,"percentile":0.57737,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-06-24T13:14:22Z","modified":"2026-06-17T03:48:31Z","products":[{"vendor":"mozilla","product":"firefox"}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-27/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1712047","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Permissions Required","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29968"},{"url":"https://github.com/advisories/GHSA-88p3-h3gw-7xj6"}],"sources":{"cve":[{"id":"CVE-2021-29968","description":"When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 89.0.1.","status":"published","published":"2021-06-24T13:14:22Z","modified":"2024-08-03T22:24:57.578Z","updated_at":"2026-11-02T14:33:06.32268Z"}],"euvd":[{"id":"EUVD-2021-16427","description":"When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 89.0.1.","status":"published","published":"2021-06-24T13:14:22Z","modified":"2024-08-03T22:24:57Z","updated_at":"2026-11-03T03:24:43.413555Z"}],"ghsa":[{"id":"GHSA-88p3-h3gw-7xj6","title":"When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This...","description":"When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 89.0.1.","status":"published","published":"2022-05-24T19:06:07Z","modified":"2023-01-29T05:08:06Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:12.058225Z"}],"nvd":[{"id":"CVE-2021-29968","description":"When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 89.0.1.","status":"published","published":"2021-06-24T14:15:10.453Z","modified":"2026-06-17T03:48:31.687Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:54.892562Z"}]}}