Ipe: Divide-by-zero in Xpdf 4.06 (and earlier), when a glyph in a Type 3 font has a zero height. (CVE-2026-85458)
Description
A divide-by-zero vulnerability exists in Xpdf version 4.06 and earlier when processing a glyph in a Type 3 font that has zero height. This flaw can cause the application to crash or behave unexpectedly due to improper handling of font glyph metrics. The vulnerability is classified as low severity based on its impact and complexity. Multiple specific versions of the affected software are identified, including various builds and Ubuntu package versions. No patch or remediation information is provided in the source data. There are no known exploits in the wild at this time.
CVSS v4.0
Affected software
pkg:deb/ubuntu/ipe?arch=source&distro=xenialpkg:deb/ubuntu/xpdf?arch=source&distro=xenialpkg:deb/ubuntu/ipe?arch=source&distro=bionicpkg:deb/ubuntu/xpdf?arch=source&distro=bionicpkg:deb/ubuntu/ipe?arch=source&distro=focalpkg:deb/ubuntu/ipe?arch=source&distro=jammypkg:deb/ubuntu/xpdf?arch=source&distro=jammypkg:deb/ubuntu/ipe?arch=source&distro=noblepkg:deb/ubuntu/xpdf?arch=source&distro=noblepkg:deb/ubuntu/ipe?arch=source&distro=stonkingpkg:deb/ubuntu/xpdf?arch=source&distro=stonkingpkg:deb/ubuntu/ipe?arch=source&distro=resolutepkg:deb/ubuntu/xpdf?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-85458 describes a divide-by-zero vulnerability in Xpdf version 4.06 and earlier triggered when a glyph in a Type 3 font has zero height. This causes improper handling of font glyph metrics, potentially leading to application crashes or unexpected behavior. The vulnerability affects multiple specific versions of the software, including various Ubuntu package builds. The CVSS vector indicates a low severity issue with local attack vector, high attack complexity, and no privileges or user interaction required. No vendor advisory or patch information is available in the provided data.
Potential Impact
The vulnerability may cause the Xpdf application to crash or behave unexpectedly when processing malformed Type 3 font glyphs with zero height. This could disrupt normal application operation but does not indicate privilege escalation, data loss, or remote code execution. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted or malformed Type 3 fonts that may trigger the divide-by-zero condition.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-8rpr-r8gp-748h
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-85458"]
- Database Specific Severity
- LOW
- Cvss Version
- 4.0
Threat ID: 6a9ad50eacd9273b49b67d50
Added to database: 09/04/2026, 14:26:22 UTC
Last enriched: 10/18/2026, 02:23:50 UTC
Last updated: 10/18/2026, 18:48:24 UTC
Views: 73
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