Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-40139 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://www.beyondtrust.com/trust-center/security-advisories/bt26-03 BeyondTrustVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-287Improper AuthenticationBeyondTrust

Affected Products

ProductVersions
beyondtrust privileged remote access
< 25.3.3

CPE

  • cpe:2.3:a:beyondtrust:privileged_remote_access:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
beyondtrust remote support
< 25.3.3

CPE

  • cpe:2.3:a:beyondtrust:remote_support:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-40139
NVD Published Date:
Jul 6, 2026
NVD Last Modified:
Jul 7, 2026
Source:
BeyondTrust
CVE-2026-40139 Details - Not Deferred