---
id: CVE-2025-27093
title: >-
  Sliver is a command and control framework that uses a custom Wireguard
  netstack
summary: >-
  Sliver is a command and control framework that uses a custom Wireguard
  netstack. In versions 1.5.43 and earlier, and in development version
  1.6.0-dev, the netstack does not limit traffic between Wireguard clients. This
  allows clients to …
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-284
published: '2025-10-28'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-27093'
references:
  - url: >-
      https://github.com/BishopFox/sliver/commit/8e5c5f14506d6d60ebb3362e6b9857ab1e0d76ff
    label: security-advisories@github.com
  - url: >-
      https://github.com/BishopFox/sliver/commit/9122878cbbcae543eb8210f616550382af2065fd
    label: security-advisories@github.com
  - url: >-
      https://github.com/BishopFox/sliver/security/advisories/GHSA-q8j9-34qf-7vq7
    label: security-advisories@github.com
  - url: >-
      https://github.com/BishopFox/sliver/security/advisories/GHSA-q8j9-34qf-7vq7
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.0024
epssPercentile: 0.13856
ingestedAt: '2026-10-08T11:31:27.663Z'
---

## Overview

Sliver is a command and control framework that uses a custom Wireguard netstack. In versions 1.5.43 and earlier, and in development version 1.6.0-dev, the netstack does not limit traffic between Wireguard clients. This allows clients to communicate with each other unrestrictedly, potentially enabling leaked or recovered keypairs to be used to attack operators or allowing port forwardings to be accessible from other implants.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.