{"id":"CVE-2026-63275","title":"LibreOffice can read CFF fonts, which may be embedded in documents","summary":"LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the arra…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P","cwe":["CWE-787","CWE-121"],"vendor":"The Document Foundation","product":"LibreOffice","affected":["LibreOffice >= 26.2 < < 26.2.5"],"published":"2026-09-22","updated":"2026-09-22","sourceUpdated":"2026-09-22T19:09:32.273","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63275","references":[{"url":"https://www.libreoffice.org/about-us/security/advisories/cve-2026-63275","label":"security@documentfoundation.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63275.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-63275"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2538363"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63275"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63275"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-22T12:23:12.191155Z"},"cvssSource":"cna","ingestedAt":"2026-09-22T12:03:01.597Z","scores":{"cna":5.4,"vendor":7.3},"epss":0.00167,"epssPercentile":0.05323,"slug":"CVE-2026-63275","body":"## Overview\n\nLibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the array can hold wrote past its end. In fixed versions the hint count is checked against the capacity the array really has.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63275.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}