CVE-2024-24246Public exploit

Process crash via malformed JSON stream data

Published Feb 29, 2024 · Updated Nov 4, 2025

Heap-based buffer overflow in QPDF 11.9.0 allows context-dependent attackers to crash the process through a crafted JSON input file. The JSON reactor mishandles a parse error when stream.data contains a nested object, fails to update its container state, and pops an invalid object handle. A user must run qpdf with --json-input on the crafted file; the demonstrated consequence is process termination.

CVSS severity5.5
Medium
EPSS probability0.44%
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

Heap-based buffer overflow in QPDF 11.9.0 allows context-dependent attackers to crash the process through a crafted JSON input file. The JSON reactor mishandles a parse error when stream.data contains a nested object, fails to update its container state, and pops an invalid object handle. A user must run qpdf with --json-input on the crafted file; the demonstrated consequence is process termination.

The record

CVE
CVE-2024-24246
Published
Feb 29, 2024
Updated
Nov 4, 2025
Vendor
Fedora Project
Product
Fedora Linux
Classifications
CWE-122, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record 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?

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

  1. Affected versionversion=38
  2. Affected versionversion=39
  3. Affected versionversion=40

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Fedora Project · Fedora Linuxversion=38; version=39; version=40
QPDF Project · QPDFversion=11.9.0

Published CVSS scores

5.5CISACVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

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