CVE-2026-34553Public exploit

Incorrect CLUT output via omitted buffer size

Published Mar 31, 2026 · Updated Mar 31, 2026

Improper initialization in iccDEV before 2.3.1.6 allows local users to produce incorrect CLUT output from crafted ICC profiles. CIccCLUT::Iterate() recurses without forwarding bufSize, while CIccCLUT::DumpLut() leaves member pointers referencing temporary stack arrays. Reachability requires local CLUT dumping through iccDumpProfile or CIccMBB::Describe(); the demonstrated consequence is incorrect or incomplete output.

CVSS severity4.0
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper initialization in iccDEV before 2.3.1.6 allows local users to produce incorrect CLUT output from crafted ICC profiles. CIccCLUT::Iterate() recurses without forwarding bufSize, while CIccCLUT::DumpLut() leaves member pointers referencing temporary stack arrays. Reachability requires local CLUT dumping through iccDumpProfile or CIccMBB::Describe(); the demonstrated consequence is incorrect or incomplete output.

The record

CVE
CVE-2026-34553
Published
Mar 31, 2026
Updated
Mar 31, 2026
Vendor
International Color Consortium
Product
iccDEV
Classifications
CWE-665, CWE-562, T1565
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2026Record 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=< 2.3.1.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

International Color Consortium · iccDEVversion=< 2.3.1.6

Published CVSS scores

4.0GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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-665Improper Initialization
CWE-562Return of Stack Variable Address
T1565Data Manipulation

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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