CVE-2026-40140 BeyondTrust CVE debrief

Who should care

Organizations using BeyondTrust Remote Support and Privileged Remote Access should prioritize patching to prevent potential denial-of-service attacks. Security teams and vulnerability management teams should review the CVE record and NVD entry for further information.

Technical summary

The vulnerability exists in the network communication subsystem of BeyondTrust Remote Support and Privileged Remote Access. A remote attacker can exploit this vulnerability to trigger a denial-of-service condition due to insufficient validation of client-supplied input. The vulnerability has a CVSS score of 8.7 and is classified as HIGH severity. Organizations using these products should prioritize patching to prevent potential denial-of-service attacks. Security teams should review CVE and NVD records for further information and verify affected product deployments exist in managed environments.

Defensive priority

High

Recommended defensive actions

• Apply patches or updates provided by BeyondTrust to address the vulnerability
• Implement compensating controls to detect and prevent potential denial-of-service attacks
• Monitor system logs for suspicious activity
• Conduct regular vulnerability assessments and penetration testing
• Restrict access to sensitive systems and data
• Review CVE record and NVD entry for further information
• Verify affected product deployments exist in managed environments

Evidence notes

The CVE record was published on 2026-07-06T17:16:31.030Z and was last modified on 2026-07-07T18:40:15.720Z. The NVD entry is currently Analyzed. The vulnerability affects BeyondTrust Remote Support and Privileged Remote Access. Evidence is limited to public CVE and NVD information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.