CVE-2022-44109Public exploitNetwork attack vector

Converter crash via recursive PDF filter parsing

Published Dec 19, 2022 · Updated Apr 17, 2025

Stack overflow in pdftojson commit 94204bb allows attackers to crash the converter by supplying a crafted PDF file. While parsing the file, Stream::addFilters repeatedly resolves nested filter objects through Parser::makeStream and reenters itself until Stream::makeFilter exhausts the process stack. Processing the malicious PDF is required, and the published AddressSanitizer trace establishes process termination rather than code execution.

CVSS severity9.8
Critical
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in pdftojson commit 94204bb allows attackers to crash the converter by supplying a crafted PDF file. While parsing the file, Stream::addFilters repeatedly resolves nested filter objects through Parser::makeStream and reenters itself until Stream::makeFilter exhausts the process stack. Processing the malicious PDF is required, and the published AddressSanitizer trace establishes process termination rather than code execution.

The record

CVE
CVE-2022-44109
Published
Dec 19, 2022
Updated
Apr 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

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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