InternationalColorConsortium iccDEV up to 2.3.1/2.3.1.1 CIccCLUT::Init reliance on undefined, unspecified, or implementation-defined behavior

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in InternationalColorConsortium iccDEV up to 2.3.1/2.3.1.1. Affected by this vulnerability is the function CIccCLUT::Init. Such manipulation leads to reliance on undefined, unspecified, or implementation-defined behavior. This vulnerability is referenced as CVE-2026-21677. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in InternationalColorConsortium iccDEV up to 2.3.1/2.3.1.1. Affected by this issue is the function CIccCLUT::Init. The manipulation with an unknown input leads to a reliance on undefined, unspecified, or implementation-defined behavior vulnerability. Using CWE to declare the problem leads to CWE-758. The product uses an API function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity. Impacted is confidentiality, integrity, and availability. CVE summarizes:

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have Undefined Behavior in its CIccCLUT::Init function which initializes and sets the size of a CLUT. This issue is fixed in version 2.3.1.1.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-21677 since 01/02/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 2.3.1.1 eliminates this vulnerability. Applying the patch 201125fbda22c8e4ea95800a6b427093fa4b8a22 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Reliance on undefined, unspecified, or implementation-defined behavior
CWE: CWE-758
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: iccDEV 2.3.1.1
Patch: 201125fbda22c8e4ea95800a6b427093fa4b8a22

Timelineinfo

01/02/2026 CVE reserved
01/06/2026 +4 days Advisory disclosed
01/06/2026 +0 days VulDB entry created
01/06/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 181
Status: Confirmed

CVE: CVE-2026-21677 (🔒)
GCVE (CVE): GCVE-0-2026-21677
GCVE (VulDB): GCVE-100-339680

Entryinfo

Created: 01/06/2026 08:17
Changes: 01/06/2026 08:17 (33), 01/06/2026 08:18 (33)
Complete: 🔍
Cache ID: 216::103

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