CVE-2026-40140: high-severity vulnerability in BeyondTrust Remote Support
High-Severity Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. It has an official Brazilian government alert.
ssvc Trackcvss 8.7epss 0.6%
Official alert in Brazil
Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.
- CISC Gov.br · 14 Jul 2026Boletim do CISC de Vulnerabilidaderead on gov.br ↗
Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
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.
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
Related CVEs — BeyondTrust Remote Support
In the same product, most dangerous first.
CVE-2024-12356CRITICALCommand Injection Vulnerability in Remote Support(RS) & Privileged Remote Access (PRA)EPSS 87.4%KEVCVE-2026-102764CRITICALImproper Origin Validation in Internal Messaging Components of BeyondTrust Remote SupportEPSS 78.0%KEVCVE-2026-40139CRITICALCritical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote AccessEPSS 0.8%CVE-2026-40141HIGHHigh-Severity Vulnerability In Web Application Component of BeyondTrust Remote Support and Privileged Remote AccessEPSS 0.5%CVE-2026-40138CRITICALCritical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote AccessEPSS 0.5%CVE-2025-0217HIGHPrivileged Remote Access Authentication BypassEPSS 0.2%