InternationalColorConsortium iccDEV up to 2.3.1/2.3.1.1 CIccMBB::Validate heap-based overflow

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

Summaryinfo

A vulnerability identified as critical has been detected in InternationalColorConsortium iccDEV up to 2.3.1/2.3.1.1. This affects the function CIccMBB::Validate. The manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2026-21676. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in InternationalColorConsortium iccDEV up to 2.3.1/2.3.1.1. It has been rated as critical. This issue affects the function CIccMBB::Validate. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have a Heap-based Buffer Overflow in its CIccMBB::Validate function which checks tag data validity. This issue is fixed in version 2.3.1.1.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-21676 since 01/02/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 2.3.1.1 eliminates this vulnerability. Applying the patch e4c38a67d06073b38d58580b0cfc78ca61005f84 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.

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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

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
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: e4c38a67d06073b38d58580b0cfc78ca61005f84

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: 215
Status: Confirmed

CVE: CVE-2026-21676 (🔒)
GCVE (CVE): GCVE-0-2026-21676
GCVE (VulDB): GCVE-100-339677

Entryinfo

Created: 01/06/2026 08:17
Changes: 01/06/2026 08:17 (67)
Complete: 🔍
Cache ID: 216::103

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