What is the CVSS score of CVE-2026-21677?

CVE-2026-21677 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of Iccdev are affected by CVE-2026-21677?

CVE-2026-21677 presents significant security risk, a input validation vulnerability rated CVSS 8.8.. A patch is available.

Is there a public PoC exploit available for CVE-2026-21677?

Yes, a public proof-of-concept exploit is available for CVE-2026-21677. Prioritise patching immediately. EPSS: 0.2%.

Iccdev CVE-2026-21677

HIGH

Improper Input Validation (CWE-20)

2026-01-06 security-advisories@github.com

Code Injection Iccdev

8.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 12, 2026 - 20:40 vuln.today

Public exploit code

Patch released

Jan 12, 2026 - 20:40 nvd

Patch available

CVE Published

Jan 06, 2026 - 04:15 nvd

HIGH 8.8

DescriptionGitHub Advisory

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.

AnalysisAI

iccDEV color management library versions 2.3.1 and earlier contain undefined behavior in the CLUT initialization function that can be exploited remotely without authentication to achieve code execution, information disclosure, or denial of service. Public exploit code exists for this vulnerability which affects all users of the vulnerable library versions. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Attacker crafts malicious ICC profile

Delivery

User opens profile in iccDEV application

Exploit

CIccCLUT::Init processes invalid CLUT parameters

Execution

Undefined behavior exploited

Impact

Arbitrary code execution achieved

Access

Attacker crafts malicious ICC profile

Delivery

User opens profile in iccDEV application

Exploit

CIccCLUT::Init processes invalid CLUT parameters

Execution

Undefined behavior exploited

Impact

Arbitrary code execution achieved

Vulnerability AssessmentAI

Exploitation	User interaction required to open a malicious ICC color profile file in an iccDEV application (versions 2.3.1 and below). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this vulnerability to compromise the affected system.
Remediation	A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

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CVE-2026-21677 vulnerability details – vuln.today

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Iccdev CVE-2026-21677

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

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Attack ChainAIDerived

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External POC / Exploit Code