CVE-2025-27093CWE-284broken-access-control

CVE-2025-27093

Medium · published October 29, 2025

CVSS v3.1
6.3
EPSS
0%
Percentile
20.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00288 · 20.3th percentile
Weakness
CWE-284 · Improper Access Control
Published
2025-10-29T00:15Z
References (4)
https://github.com/BishopFox/sliver/commit/8e5c5f14506d6d60ebb3362e6b9857ab1e0d76ff · [email protected]https://github.com/BishopFox/sliver/commit/9122878cbbcae543eb8210f616550382af2065fd · [email protected]https://github.com/BishopFox/sliver/security/advisories/GHSA-q8j9-34qf-7vq7 · [email protected]https://github.com/BishopFox/sliver/security/advisories/GHSA-q8j9-34qf-7vq7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 28 OCT 19:29Z
    Sliver does not restricted traffic between Wireguard clients.
    cvelistv5