CVE-2025-27093

Sliver does not restricted traffic between Wireguard clients.

Published Oct 28, 2025 CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
Description
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

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-q8j9-34qf-7vq7 Silver has unrestricted traffic between Wireguard clients
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Bishopfox
Bishopfox sliver
Vendors & Products Bishopfox
Bishopfox sliver
Type Values Removed Values Added
Description 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.
Title Sliver does not restricted traffic between Wireguard clients.
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 29, 2025, 5:43 PM
Reserved
Feb 18, 2025, 4:44 PM
Status
Deferred
Published
Oct 28, 2025, 8:15 PM
Modified
Oct 8, 2026, 11:10 AM