CVE-2026-40139 — Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access

CVE-2026-40139

Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
BeyondTrust / Remote Support	affected 0 through 25.3.2
BeyondTrust / Privileged Remote Access	affected 0 through 25.3.2

CWE

CWE-287

References

https://www.beyondtrust.com/trust-center/security-advisories/bt26-03

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.