{"id":"CVE-2026-110605","title":"libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table","summary":"libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coord…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-369"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T15:17:12.160","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110605","references":[{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503","label":"disclosure@vulncheck.com"},{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542","label":"disclosure@vulncheck.com"},{"url":"https://github.com/tomolt/libschrift/issues/46","label":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haind-pwn/libschrift-unitsperem-zero-oob","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/libschrift-through-0.10.2-divide-by-zero-via-unitsperem-in-draw-line","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-14T15:36:14.003Z","slug":"CVE-2026-110605","body":"## Overview\n\nlibschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}