{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-110605", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-14T13:07:21.881Z", "datePublished": "2026-10-14T14:16:45.714Z", "dateUpdated": "2026-10-14T14:16:45.714Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-14T14:16:45.714Z"}, "datePublic": "2026-10-02T00:00:00.000Z", "title": "libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line", "descriptions": [{"lang": "en", "value": "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 coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Divide By Zero", "cweId": "CWE-369", "type": "CWE"}]}], "affected": [{"vendor": "tomolt", "product": "libschrift", "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThanOrEqual": "0.10.2", "status": "affected", "versionType": "semver"}], "collectionURL": "https://github.com/tomolt/libschrift", "repo": "https://github.com/tomolt/libschrift"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/tomolt/libschrift/issues/46", "tags": ["issue-tracking"]}, {"url": "https://hackmd.io/@haind-pwn/libschrift-unitsperem-zero-oob", "tags": ["third-party-advisory"]}, {"url": "https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542", "tags": ["technical-description"]}, {"url": "https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503", "tags": ["technical-description"]}, {"name": "VulnCheck Advisory: libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/libschrift-through-0.10.2-divide-by-zero-via-unitsperem-in-draw-line"}], "credits": [{"lang": "en", "value": "WTCYJ", "type": "finder"}, {"lang": "en", "value": "HaiND from the Post and Telecommunication Institute of Technology", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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