CVE-2025-11896

Process crash via cyclic CMap reference

Published Oct 16, 2025 · Updated Oct 16, 2025

Uncontrolled recursion in Glyph & Cog Xpdf 4.05 and earlier allows local users to crash a process via a PDF with a cyclic CMap. The CMap parser follows UseCMap references without cycle detection, so a self-referential object triggers unbounded recursion until the stack overflows. Exploitation requires local processing of a crafted PDF and interrupts only the affected Xpdf process, with no reported data disclosure or modification.

CVSS severity2.1
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in Glyph & Cog Xpdf 4.05 and earlier allows local users to crash a process via a PDF with a cyclic CMap. The CMap parser follows UseCMap references without cycle detection, so a self-referential object triggers unbounded recursion until the stack overflows. Exploitation requires local processing of a crafted PDF and interrupts only the affected Xpdf process, with no reported data disclosure or modification.

The record

CVE
CVE-2025-11896
Published
Oct 16, 2025
Updated
Oct 16, 2025
Vendor
Glyph & Cog, LLC
Product
Xpdf
Classifications
CWE-674, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=4.05

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Glyph & Cog, LLC · Xpdfversion=0 <=4.05

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-674Uncontrolled Recursion
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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