# How to check for Go MPTCP listeners and turn them off

Source: [DEV Community: backend](https://dev.to/importstatic/how-to-check-for-go-mptcp-listeners-and-turn-them-off-1l1d) · 2026-11-14 · Backend
Page: https://themorning.dev/story/how-to-check-for-go-mptcp-listeners-and-turn-them-off-8960e7a86ea66f86
Kind: security · Impact: high

## In brief

- Turning off Multipath TCP in a Go server removes the condition the published exploit for CVE-2026-98432 needs.
- Disabling MPTCP does not fix the underlying kernel bug.
- Anthropic described the exploit on October 27 as zero-click remote code execution.

## Why it matters

Developers running Go servers with MPTCP listeners can reduce their exposure to the published exploit by turning MPTCP off while the kernel bug remains unfixed.

## What to do

- Check Go servers for MPTCP listeners
- Turn off Multipath TCP on affected Go servers

## CVEs

- CVE-2026-98432

## Timeline

- 2026-10-27: Anthropic describes the published exploit for CVE-2026-98432 as zero-click remote code execution

## Coverage

- [How to check for Go MPTCP listeners and turn them off](https://dev.to/importstatic/how-to-check-for-go-mptcp-listeners-and-turn-them-off-1l1d) — DEV Community: backend, 2026-11-14

Tags: go, mptcp, security, vulnerability, networking

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Dev – https://themorning.dev