Medium 6.3Published Oct 28, 2025

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

Updated under an hour ago (Oct 27, 2026, 12:30 PM ET)

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It affects BishopFox sliver. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for BishopFox sliver

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-284
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 29, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

BishopFox sliver bishopfox:sliver (from the name)	through 1.5.43	CNA record

References

References

https://github.com/BishopFox/sliver/security/advisories/GHSA-q8j9-34qf-7vq7	x-refsource-confirm
https://github.com/BishopFox/sliver/commit/8e5c5f14506d6d60ebb3362e6b9857ab1e0d76ff	x-refsource-misc
https://github.com/BishopFox/sliver/commit/9122878cbbcae543eb8210f616550382af2065fd	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.