OpenVPN vulnerability allows user impersonation in Ubuntu
Key Takeaway
A flaw in how OpenVPN handles certificate subject fields could allow an authenticated user to impersonate others.
Summary
Ubuntu has released security updates for OpenVPN to address CVE-2026-84790. The vulnerability stems from incorrect handling of certificate subject fields, which could enable a remote authenticated user to impersonate other users and gain unintended access to network services.
Vulnerability details
- The issue involves the incorrect handling of certificate subject fields.
- An attacker must be a remote authenticated user to exploit this.
- Successful exploitation may lead to user impersonation and unintended access to network services.
- Users must restart OpenVPN after updating the package to apply the fix.
Original reference: ubuntu.com →