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CVE-2025-27093— Sliver does not restricted traffic between Wireguard clients.

Quick assessment

Affected
BishopFox sliver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sliver是Bishop Fox开源的一个开源的跨平台对手模拟/红队框架。可以被各种规模的组织用来执行安全测试。 Sliver 1.5.43及之前版本和1.6.0-dev版本存在访问控制错误漏洞，该漏洞源于Wireguard客户端之间的流量不受限制，可能导致泄露或恢复的密钥对被用于攻击操作者或允许其他植入物访问端口转发。

CVSS 6.3 · Medium EPSS 0.22% · P13

Possible ATT&CK Techniques 2 AI

T1572 · Protocol Tunneling T1090 · Proxy
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I. Basic Information for CVE-2025-27093

Vulnerability Information
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Vulnerability Title
Sliver does not restricted traffic between Wireguard clients.
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Sliver 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sliver是Bishop Fox开源的一个开源的跨平台对手模拟/红队框架。可以被各种规模的组织用来执行安全测试。 Sliver 1.5.43及之前版本和1.6.0-dev版本存在访问控制错误漏洞，该漏洞源于Wireguard客户端之间的流量不受限制，可能导致泄露或恢复的密钥对被用于攻击操作者或允许其他植入物访问端口转发。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
BishopFox sliver <= 1.5.43 -

II. Public POCs for CVE-2025-27093

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III. Intelligence Information for CVE-2025-27093

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Patches & Fixes for CVE-2025-27093 (2)

Vendor Advisories for CVE-2025-27093 (1)

IV. Related Vulnerabilities

Same product: sliver
Same vendor: BishopFox
Same weakness: CWE-284

V. Comments for CVE-2025-27093

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