CVE-2026-40139

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.beyondtrust.com/trust-center/security-advisories/bt26-03	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:beyondtrust:privileged_remote_access::::::::
	cpe:2.3:a:beyondtrust:remote_support::::::::

History

No history.

Information

Published : 2026-07-06 17:16

Updated : 2026-07-07 18:39

NVD link : CVE-2026-40139

Mitre link : CVE-2026-40139

CVE.ORG link : CVE-2026-40139

JSON object : View

Products Affected

beyondtrust

privileged_remote_access
remote_support

CWE

CWE-287

Improper Authentication

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