CVE-2026-34227: Bishopfox Sliver

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to version 1.7.4, a single click on a malicious link gives an unauthenticated attacker immediate, silent control over every active C2 session or beacon, capable of exfiltrating all collected target data (e.g. SSH keys, ntds.dit) or destroying the entire compromised infrastructure, entirely through the operator's own browser. This issue has been patched in version 1.7.4.

Affected products

• Bishopfox Sliver: before 1.7.4 (fixed in 1.7.4)

Published 2026-03-31. Last modified 2026-07-24.