CVE-2022-24197Public exploitNetwork attack vector

Application crash via recursive PDF array parsing

Published Feb 1, 2022 · Updated Aug 3, 2024

Denial of service in iText 7.1.17 and earlier allows context-dependent attackers to crash PDF-processing applications with a crafted PDF. PdfReader.readArray continues after malformed array termination instead of rejecting the unexpected token, allowing recursive object parsing to exhaust the JVM stack and surface in ByteBuffer.append. Opening or otherwise parsing the file is required; the demonstrated consequence is a StackOverflowError that interrupts the consuming application.

CVSS severity6.5
Medium
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in iText 7.1.17 and earlier allows context-dependent attackers to crash PDF-processing applications with a crafted PDF. PdfReader.readArray continues after malformed array termination instead of rejecting the unexpected token, allowing recursive object parsing to exhaust the JVM stack and surface in ByteBuffer.append. Opening or otherwise parsing the file is required; the demonstrated consequence is a StackOverflowError that interrupts the consuming application.

The record

CVE
CVE-2022-24197
Published
Feb 1, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 1, 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

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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

6.5National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3National Vulnerability DatabaseAV:N/AC:M/Au:N/C:N/I:N/A:P

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
T1499.004Application or System Exploitation

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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