CVE-2022-38234Public exploit

Local process crash via invalid lexer pointer dereference

Published Aug 16, 2022 · Updated Aug 3, 2024

A segmentation fault in the Xpdf 3.04 Lexer allows local users to crash pdftops by processing a crafted PDF file. Lexer::getObj dereferences an invalid high-address pointer at Lexer.cc line 132 while parsing the file content stream. Execution requires a user or workflow to pass the malicious document to pdftops; the demonstrated consequence is process termination.

CVSS severity5.5
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

A segmentation fault in the Xpdf 3.04 Lexer allows local users to crash pdftops by processing a crafted PDF file. Lexer::getObj dereferences an invalid high-address pointer at Lexer.cc line 132 while parsing the file content stream. Execution requires a user or workflow to pass the malicious document to pdftops; the demonstrated consequence is process termination.

The record

CVE
CVE-2022-38234
Published
Aug 16, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-754
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/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 exploitPublished

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo