CVE-2024-7868

Application crash via malformed JPEG stream

Published Aug 15, 2024 · Updated Oct 6, 2025

Uninitialized variable use in Xpdf 4.05 and earlier allows local users to crash the application through a malformed JPEG stream. Invalid header data in a PDF DCT stream leaves a DCT decoder variable uninitialized, leading the decoder to read an invalid address. Exploitation requires local processing of a crafted PDF and causes a segmentation fault that interrupts only the affected Xpdf process.

CVSS severity2.1
Low
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized variable use in Xpdf 4.05 and earlier allows local users to crash the application through a malformed JPEG stream. Invalid header data in a PDF DCT stream leaves a DCT decoder variable uninitialized, leading the decoder to read an invalid address. Exploitation requires local processing of a crafted PDF and causes a segmentation fault that interrupts only the affected Xpdf process.

The record

CVE
CVE-2024-7868
Published
Aug 15, 2024
Updated
Oct 6, 2025
Vendor
Glyph & Cog, LLC
Product
Xpdf
Classifications
CWE-457, CWE-908, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 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
8.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-457Use of Uninitialized Variable
CWE-908Use of Uninitialized Resource
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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