CVE-2026-21676 iccDEV has a Heap-based Buffer Overflow in its CIccMBB::Validate() function
A heap-based buffer overflow in iccDEV allows attackers to execute arbitrary code or cause denial of service via malicious ICC profiles.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21676?
CVE-2026-21676 is a high-severity memory corruption vulnerability in Color Iccdev, published on 6 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have a Heap-based Buffer Overflow in its CIccMBB::Validate function which checks tag data validity. This issue is fixed in version 2.3.1.1.
Weakness: CWE-122
Which versions are affected by CVE-2026-21676?
It affects 1 product.
Products include Color Iccdev.
How do I fix CVE-2026-21676?
No fix has been published for CVE-2026-21676 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-21676 being exploited?
There is no known exploitation of CVE-2026-21676 in the wild and no public exploit code.
Other vulnerabilities in Color Iccdev
- CVE-2026-21675 iccDEV has a Use After Free vulnerability in CIccCmm class via improper hint manager object deletion
- CVE-2026-24405 iccDEV has Heap Buffer Overflow in CIccMpeCalculator::Read()
- CVE-2026-24406 iccDEV has Heap Buffer Overflow in CIccTagNamedColor2::SetSize()
- CVE-2026-24412 iccDEV has Heap Buffer Overflow in icCurvesFromXml()
- CVE-2026-22861 iccDEV has a heap-buffer-overflow in SIccCalcOp::Describe() at IccProfLib/IccMpeCalc.cpp
Sources
Also known as GHSA-j5vv-p2hv-c392.