CVE-2026-85458Hinoki check available

Process crash via zero-height Type 3 glyph

Published Sep 3, 2026 · Updated Sep 4, 2026

Divide-by-zero in Type 3 glyph handling in Glyph & Cog, LLC Xpdf 4.06 and earlier allows local users to crash a process. When Xpdf processes a Type 3 glyph whose height is zero, the glyph-handling path uses that height as a divisor without rejecting the invalid metric. A crafted PDF must reach an Xpdf viewer or utility, and the resulting arithmetic exception interrupts that processing instance without reported data disclosure or modification.

CVSS severity2.1
Low
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Divide-by-zero in Type 3 glyph handling in Glyph & Cog, LLC Xpdf 4.06 and earlier allows local users to crash a process. When Xpdf processes a Type 3 glyph whose height is zero, the glyph-handling path uses that height as a divisor without rejecting the invalid metric. A crafted PDF must reach an Xpdf viewer or utility, and the resulting arithmetic exception interrupts that processing instance without reported data disclosure or modification.

The record

CVE
CVE-2026-85458
Published
Sep 3, 2026
Updated
Sep 4, 2026
Vendor
Glyph & Cog, LLC
Product
Xpdf
Classifications
CWE-369, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=4.06

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Glyph & Cog, LLC · Xpdfversion=4.06

Published CVSS scores

2.1Glyph & Cog, LLCCVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-369Divide By Zero
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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