CVE-2026-40140

EUVD-2026-41888
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
BTCNA
8.7 HIGH
NETWORK
LOW
NONE
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
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
beyondtrustremote_support
𝑥
< 26.2.1
CNA
beyondtrustremote_support
𝑥
< 25.3.3
CNA
Common Weakness Enumeration
References
https://www.beyondtrust.com/trust-center/security-advisories/bt26-03