What is CVE-2026-40140?

CVE-2026-40140 is a high-severity vulnerability in Beyondtrust Privileged Remote Access, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-06.

How severe is CVE-2026-40140?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Beyondtrust Privileged Remote Access

CVE-2026-40140

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.006 (45.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Beyondtrust Privileged Remote Access — versions 0
Beyondtrust Privileged_remote_access
Beyondtrust Remote Support — versions 0
Beyondtrust Remote_support

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

13061848-ea10-403d-bd75-c83a022c2891 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-40140?: CVE-2026-40140 is a high-severity vulnerability in Beyondtrust Privileged Remote Access, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-06.
How severe is CVE-2026-40140?: High severity. CVSS v3 base score is 7.5 out of 10.