CVE-2026-40140: CWE-400 Uncontrolled Resource Consumption in BeyondTrust Remote Support
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.
AI Analysis
Technical Summary
CVE-2026-40140 is a vulnerability classified as CWE-400 (Uncontrolled Resource Consumption) affecting BeyondTrust Remote Support and Privileged Remote Access products. The flaw exists in the network communication subsystem where insufficient validation of client input can be exploited by unauthenticated remote attackers to trigger a denial-of-service (DoS) condition, impacting appliance availability. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity, with attack vector network, no privileges or user interaction required, and high impact on availability.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to cause a denial-of-service condition, potentially rendering the affected BeyondTrust appliance unavailable. This impacts the availability of the Remote Support and Privileged Remote Access services, disrupting legitimate access and support operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been published at this time. Users should monitor BeyondTrust advisories for updates and apply patches or mitigations as soon as they become available.
CVE-2026-40140: CWE-400 Uncontrolled Resource Consumption in BeyondTrust Remote Support
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 v4.0
Score 8.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-40140 is a vulnerability classified as CWE-400 (Uncontrolled Resource Consumption) affecting BeyondTrust Remote Support and Privileged Remote Access products. The flaw exists in the network communication subsystem where insufficient validation of client input can be exploited by unauthenticated remote attackers to trigger a denial-of-service (DoS) condition, impacting appliance availability. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity, with attack vector network, no privileges or user interaction required, and high impact on availability.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to cause a denial-of-service condition, potentially rendering the affected BeyondTrust appliance unavailable. This impacts the availability of the Remote Support and Privileged Remote Access services, disrupting legitimate access and support operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been published at this time. Users should monitor BeyondTrust advisories for updates and apply patches or mitigations as soon as they become available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- BT
- Date Reserved
- 2026-04-09T18:36:13.133Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4bdd5a27e9c79719dab24d
Added to database: 07/06/2026, 16:52:42 UTC
Last enriched: 07/06/2026, 17:07:15 UTC
Last updated: 07/06/2026, 19:07:21 UTC
Views: 8
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