Is this vulnerability remotely exploitable?

It can be, depending on how the application exposes ICC profile processing. If a service accepts images or documents with embedded ICC profiles over the network, an attacker could remotely submit a crafted file that triggers the vulnerable code path.

What level of access does an attacker need?

An attacker needs the ability to supply or influence ICC profiles that the application processes. This might involve uploading images or documents, providing assets through an API, or causing the application to open a file containing a malicious profile.

What is the safest general fix pattern?

The safest general fix is to ensure robust input validation and removal of undefined behavior from parsing routines. In practice, that means validating ICC profile structures and fields before use, enforcing strict bounds checks, and refactoring code that depends on assumptions not guaranteed by the language standard.

Severity:

HIGH RISK

(7.1)

Input Validation and Undefined Behavior (CWE-20, CWE-758) in iccDEV CIccTagLut16::Read()

CVE-2026-21685

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-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Input Validation and Undefined Behavior

CWE:

CWE-20;CWE-758

Impact:

Memory Corruption and Application Compromise via Undefined Behavior

Severity:

HIGH RISK

(7.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Input Validation and Undefined Behavior

CWE:

CWE-20;CWE-758

Impact:

Memory Corruption and Application Compromise via Undefined Behavior

Severity:

HIGH RISK

(7.1)

CVSS Version:

3.1

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Input Validation and Undefined Behavior (CWE-20, CWE-758) in iccDEV CIccTagLut16::Read()

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

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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