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CVE-2026-40138

Status: AnalyzedCritical (9.2)—

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

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Vulnerabilidad de autenticación previa en servicio remoto (AV:N, PR:N). Bypass de controles de acceso permitiendo acceso no autorizado a cuentas elevadas en appliance BeyondTrust.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account ManagementApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareApplication Developer GuidanceActive Directory Configuration

Affected technologies (2)

Beyondtrust — Privileged Remote AccessBeyondtrust — Remote Support

CWEs

References

Raw JSON (NVD)

Show
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