CVE-2026-40140 — HIGH (7.5)

Q: How severe is CVE-2026-40140?

CVE-2026-40140 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-40140?

Check the references section above for vendor advisories and patch information. Affected products include: Beyondtrust Privileged Remote Access, Beyondtrust Remote Support.

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Beyondtrust	Privileged Remote Access	< 25.3.3
Beyondtrust	Remote Support	< 25.3.3

Related Weaknesses (CWE)

CWE-400

References

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

FAQ

What is CVE-2026-40140?

CVE-2026-40140 is a vulnerability with a CVSS score of 7.5 (HIGH). BeyondTrust Remote Support and Privileged Remote Access contain a high-severity pre-authentication vulnerability in the network communication subsystem. Insufficient validation of client-supplied inpu...

How severe is CVE-2026-40140?

CVE-2026-40140 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40140?

Check the references section above for vendor advisories and patch information. Affected products include: Beyondtrust Privileged Remote Access, Beyondtrust Remote Support.