# CVE-2026-34551: iccDEV: NPD in CIccTagLut16::Write()

> A null-pointer dereference in iccDEV allows attackers to cause a denial of service via a crafted ICC profile embedded in a TIFF file.

- **Severity:** Medium 6.2 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Mar 2026
- **Updated:** 1 Apr 2026
- **Also known as:** GHSA-jmx9-9xmx-g57h

## What is CVE-2026-34551?

CVE-2026-34551 is a medium-severity 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 null-pointer dereference (NPD) in CIccTagLut16::Write() can be triggered when processing a crafted ICC profile (embedded in a TIFF and extracted during iccTiffDump). This issue has been patched in version 2.3.1.6.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2026-34551?

It affects 1 product.


Products: Color Iccdev.

## How do I fix CVE-2026-34551?

No fix has been published for CVE-2026-34551 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-34551 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34551 exists.

## Other vulnerabilities in Color Iccdev

- [CVE-2026-21675](https://insights.sbomify.com/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](https://insights.sbomify.com/CVE-2026-24405/): iccDEV has Heap Buffer Overflow in CIccMpeCalculator::Read() (high 8.8)
- [CVE-2026-24406](https://insights.sbomify.com/CVE-2026-24406/): iccDEV has Heap Buffer Overflow in CIccTagNamedColor2::SetSize() (high 8.8)
- [CVE-2026-24412](https://insights.sbomify.com/CVE-2026-24412/): iccDEV has Heap Buffer Overflow in icCurvesFromXml() (high 8.8)
- [CVE-2026-22861](https://insights.sbomify.com/CVE-2026-22861/): iccDEV has a heap-buffer-overflow in SIccCalcOp::Describe() at IccProfLib/IccMpeCalc.cpp (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34551 and fix it if it is affected.

What it is: CVE-2026-34551 is a medium-severity 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34551 exists.

Affected product: Color Iccdev. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-34551/ (Markdown: https://insights.sbomify.com/CVE-2026-34551/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34551
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34551
- OSV: https://osv.dev/vulnerability/CVE-2026-34551

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-34551/
Summaries are generated and may contain mistakes; the official description above is the record.