What is the CVSS score of CVE-2026-21678?

CVE-2026-21678 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Iccdev are affected by CVE-2026-21678?

CVE-2026-21678 presents notable security risk, a input validation vulnerability rated CVSS 7.8. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2026-21678?

Yes, a public proof-of-concept exploit is available for CVE-2026-21678. Prioritise patching immediately. EPSS: 0.0%.

Iccdev CVE-2026-21678

HIGH

Improper Input Validation (CWE-20)

2026-01-07 security-advisories@github.com

Code Injection Iccdev

7.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.8 HIGH

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

Attack Vector

Local

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 13, 2026 - 21:00 vuln.today

Public exploit code

Patch released

Jan 13, 2026 - 21:00 nvd

Patch available

CVE Published

Jan 07, 2026 - 18:15 nvd

HIGH 7.8

DescriptionGitHub Advisory

iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to heap-buffer-overflow vulnerability in IccTagXml(). This issue has been patched in version 2.3.1.2.

AnalysisAI

Heap buffer overflow in iccDEV versions prior to 2.3.1.2 allows local attackers with user interaction to achieve arbitrary code execution through malicious ICC color profile manipulation in the IccTagXml() function. Public exploit code exists for this vulnerability, which affects all users of the vulnerable iccDEV libraries and tools. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Craft malformed ICC color profile

Exploit

Load profile via IccTagXml() parser

Execution

Trigger heap buffer overflow

Impact

Execute arbitrary code with user privileges

Access

Craft malformed ICC color profile

Exploit

Load profile via IccTagXml() parser

Execution

Trigger heap buffer overflow

Impact

Execute arbitrary code with user privileges

Vulnerability AssessmentAI

Exploitation	User must interact with malformed ICC color profile file through iccDEV library versions prior to 2.3.1.2. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 7.8 (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. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-21678 vulnerability details – vuln.today

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Iccdev CVE-2026-21678

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