CVE-2026-40139

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.

Affected Software

VendorProductVersion RangeStatus
BeyondTrustRemote Support0 <= 25.3.2affected
BeyondTrustPrivileged Remote Access0 <= 25.3.2affected

Weaknesses

  • CWE-287: CWE-287 Improper Authentication

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References