Is this vulnerability remotely exploitable?

It can be, depending on how the affected application consumes ICC profiles. If profiles can be supplied via network content (such as images or documents loaded from remote sources), an attacker may remotely trigger the vulnerable path by delivering a crafted asset.

What level of access does an attacker need to exploit this?

The attacker must be able to influence or provide an ICC profile that the vulnerable application will process. This may be as simple as convincing a user to open a malicious image or document, or submitting a file to a service that performs server-side color management.

What is the safest general fix pattern?

The safest pattern is to enforce strong input validation and type checks before any numeric conversions or pointer-based operations, ensuring that all ICC profile fields, argument counts, and data types are consistent and within expected ranges. Additionally, using safer conversion functions and defensive checks around all casts reduces the likelihood of type confusion and memory corruption.

Severity:

HIGH RISK

(8.8)

Type Confusion in Calc Operator Argument Handling (CWE-681) in iccDEV ICC Profile Library

CVE-2026-21688

Published:

Jan 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Type Confusion / Data Type Mismatch

CWE:

CWE-20;CWE-190;CWE-476;CWE-681

Impact:

Memory Corruption and Potential Code Execution

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Type Confusion / Data Type Mismatch

CWE:

CWE-20;CWE-190;CWE-476;CWE-681

Impact:

Memory Corruption and Potential Code Execution

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Type Confusion in Calc Operator Argument Handling (CWE-681) in iccDEV ICC Profile Library

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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