CVE-2024-41440Public exploit

Process crash via out-of-bounds quantization write

Published Jul 30, 2024 · Updated Aug 2, 2024

Heap buffer overflow in HiColor 0.5.0 allows local users to crash the command-line program by processing a crafted PNG file. In png_quantize() at cli.c line 220, a one-byte write crosses the boundary of a heap buffer returned by rgb_to_cp while quantizing the malicious image. The crafted file must be processed by the local quantize command; the demonstrated consequence is process termination, with no sourced confidentiality or integrity impact.

CVSS severity6.2
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in HiColor 0.5.0 allows local users to crash the command-line program by processing a crafted PNG file. In png_quantize() at cli.c line 220, a one-byte write crosses the boundary of a heap buffer returned by rgb_to_cp while quantizing the malicious image. The crafted file must be processed by the local quantize command; the demonstrated consequence is process termination, with no sourced confidentiality or integrity impact.

The record

CVE
CVE-2024-41440
Published
Jul 30, 2024
Updated
Aug 2, 2024
Vendor
dbohdan
Product
HiColor
Classifications
CWE-122, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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

  1. Affected versionversion=0.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

dbohdan · HiColorversion=0.5.0

Published CVSS scores

6.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1204.002Malicious File

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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