What is the CVSS score of CVE-2026-21494?

CVE-2026-21494 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Iccdev are affected by CVE-2026-21494?

Organizations using versions should be aware of moderate risk from CVE-2026-21494, a heap-based buffer overflow vulnerability rated CVSS 6.1.. A patch is available.

Iccdev CVE-2026-21494

MEDIUM

Heap-based Buffer Overflow (CWE-122)

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

Buffer Overflow Iccdev

6.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.1 MEDIUM

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

Patch released

Jan 12, 2026 - 18:29 nvd

Patch available

CVE Published

Jan 06, 2026 - 19:16 nvd

MEDIUM 6.1

DescriptionGitHub Advisory

iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. A vulnerability present in versions prior to 2.3.1.2 affects users of the iccDEV library who process ICC color profiles. It results in heap buffer overflow in CIccTagLut8::Validate(). Version 2.3.1.2 contains a patch. No known workarounds are available.

AnalysisAI

Processing malicious ICC color profiles in iccDEV library versions before 2.3.1.2 triggers a heap buffer overflow in the tag validation function, allowing local attackers to cause denial of service or potentially execute code with user privileges. The vulnerability requires user interaction to process a crafted color profile file and affects any application using the vulnerable iccDEV library for ICC profile handling. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 6.1 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this flaw, heap buffer overflow in `CIccTagLut8::Validate()`.
Remediation	A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems running versions and apply vendor patches as part of regular patch cycle. …

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CVE-2026-21494 vulnerability details – vuln.today

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