CVE-2026-21505
Published: 07 January 2026
Summary
CVE-2026-21505 is a medium-severity Improper Input Validation (CWE-20) vulnerability in Color Iccdev. Its CVSS base score is 5.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 12.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.
Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.
Directly implements checks on information inputs to reject invalid data before processing.
Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Vulnerability enables local DoS via crafted input triggering application crash (type confusion), directly matching application exploitation for endpoint denial of service.
NVD Description
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 has undefined behavior due to an invalid enum value. This issue has been patched…
more
in version 2.3.1.2.
Deeper analysisAI
CVE-2026-21505 is an undefined behavior vulnerability in iccDEV, a set of libraries and tools designed for interacting with, manipulating, and applying ICC color management profiles. Versions prior to 2.3.1.2 are affected due to handling an invalid enum value, which aligns with CWE-20 (Improper Input Validation) and CWE-843 (Type Confusion).
The vulnerability carries a CVSS v3.1 base score of 5.5 (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). A local attacker with no privileges required can exploit it through low-complexity attacks that necessitate user interaction, such as processing a specially crafted input. Successful exploitation results in high-impact denial of service, such as application crashes, with no effects on confidentiality or integrity.
Mitigation is available via an update to iccDEV version 2.3.1.2, where the issue was patched. Official advisories and fixes are detailed in the project's GitHub security advisory (GHSA-j577-8285-qrf9), issue #361, pull request #419, and related commits (3bbe2088b2796cf0aa4f7fa19f7ccd9ad1c7aba5 and b1bb72fc3e9442ee1355aabae7314bb7d3fc9d41).
Details
- CWE(s)