CRITICAL CWE-287
CVE-2026-40138
Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
BeyondTrust·Remote Support
9.2/ 10
CVSS 4.0
Critical severity
0.46%
EPSS exploit odds
Chance of exploitation in the next 30 days
Higher than 40% of all CVEs
Not listed
CISA KEV catalog
No confirmed in-the-wild exploitation on CISA's list.
Timeline
- Published
- Jul 6, 2026
- Updated
- Jul 7, 2026
- First covered
- Jul 7, 2026
- Latest story
- 4 months ago
Summary
A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support and Privileged Remote Access. Improper validation of authentication data may allow a network-positioned 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
CWE-287Improper Authentication
Attack profile
Attack vectorNetwork
ComplexityHigh
RequirementsPresent
PrivilegesNone
User interactionNone
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NAffected products
- BeyondTrust Remote Supportup to 25.3.2
- BeyondTrust Privileged Remote Accessup to 25.3.2