CRITICAL CWE-287
CVE-2026-40139
Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
BeyondTrust·Remote Support
9.2/ 10
CVSS 4.0
Critical severity
0.75%
EPSS exploit odds
Chance of exploitation in the next 30 days
Higher than 56% 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. 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.
CWE-287Improper Authentication
Attack profile
Attack vectorNetwork
ComplexityLow
RequirementsPresent
PrivilegesNone
User interactionNone
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:4.0/AV:N/AC:L/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