Vulnerability · Published Jul 6, 2026 · Assigned by BT
CVE-2026-40139Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
Critical 9.2
In plain English
A critical-severity improper authentication in Privileged Remote Access from BeyondTrust. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| BeyondTrust | Remote Support | 0 – through 25.3.2 |
| BeyondTrust | Privileged Remote Access | 0 – through 25.3.2 |
Weakness: CWE-287 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N