CVE-2026-40140

High-Severity Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access

State: Published
Severity: 8.7 High
Published: Jul 6, 2026
Updated: Jul 7, 2026
Reserved: Apr 9, 2026

Description

BeyondTrust Remote Support and Privileged Remote Access contain a high-severity pre-authentication vulnerability in the network communication subsystem. Insufficient validation of client-supplied input may allow an unauthenticated remote attacker to trigger a denial-of-service condition affecting appliance availability.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	BT

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
Remote SupportBeyondTrust	25.3.2 and earlierAffected
Privileged Remote AccessBeyondTrust	25.3.2 and earlierAffected

References

https://www.beyondtrust.com/trust-center/security-advisories/bt26-03

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