Remote Support and Privileged Remote Access
CVE-2026-40139: Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Remote Support 0 to 25.3.2 | Upgrade past 25.3.2; see the advisory |
| Privileged Remote Access 0 to 25.3.2 | Upgrade past 25.3.2; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support. Improper processing of authentication requests may allow an unauthenticated remote attacker to bypass access controls and gain unauthorized access to the appliance, including accounts with elevated privileges. Exploitation requires a specific authentication configuration to be enabled.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.