CVE-2026-34542 iccDEV: SBO in CIccCalculatorFunc::Apply()

What is CVE-2026-34542?

CVE-2026-34542 is a medium-severity memory corruption vulnerability in Color Iccdev, published on 31 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a stack-buffer-overflow (SBO) in CIccCalculatorFunc::Apply() when processed via iccApplyNamedCmm. Under AddressSanitizer, the failure is reported as a 4-byte write stack-buffer-overflow in IccProfLib/IccMpeCalc.cpp:3873, reachable through the MPE calculator / curve set initialization path. This issue has been patched in version 2.3.1.6.

Weakness: CWE-121

Which versions are affected by CVE-2026-34542?

It affects 1 product.

Products include Color Iccdev.

How do I fix CVE-2026-34542?

No fix has been published for CVE-2026-34542 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-2026-34542 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34542 exists.

Other vulnerabilities in Color Iccdev

• CVE-2026-21675 iccDEV has a Use After Free vulnerability in CIccCmm class via improper hint manager object deletion Critical 9.8
• CVE-2026-24405 iccDEV has Heap Buffer Overflow in CIccMpeCalculator::Read() High 8.8
• CVE-2026-24406 iccDEV has Heap Buffer Overflow in CIccTagNamedColor2::SetSize() High 8.8
• CVE-2026-24412 iccDEV has Heap Buffer Overflow in icCurvesFromXml() High 8.8
• CVE-2026-22861 iccDEV has a heap-buffer-overflow in SIccCalcOp::Describe() at IccProfLib/IccMpeCalc.cpp High 8.8

All Color Iccdev vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6749-6859-wf96.