CVE-2026-110605

libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line

Published Oct 14, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Tomolt
Tomolt libschrift
Vendors & Products Tomolt
Tomolt libschrift
Type Values Removed Values Added
Description 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.
Title libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line
Weaknesses CWE-369
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 26, 2026, 4:17 PM
Reserved
Oct 14, 2026, 1:07 PM
Status
Deferred
Published
Oct 14, 2026, 3:17 PM
Modified
Oct 26, 2026, 5:17 PM