CVE-2026-40140
Last modified
CVE-2026-40140 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.63% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Beyondtrust | Privileged Remote Access | < 25.3.3 |
| Beyondtrust | Remote Support | < 25.3.3 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-40140?
How severe is CVE-2026-40140?
How do I fix CVE-2026-40140?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-40135An OS Command Injection vulnerability exists in the SAP NetW…6.5
- CVE-2026-40136SAP Financial Consolidation allows an authenticated attacker…4.3
- CVE-2026-40137SAP TAF_APPLAUNCHER within Business Server Pages allows an u…6.1
- CVE-2026-40138A critical pre-authentication vulnerability exists in the au…8.1
- CVE-2026-40139A critical pre-authentication vulnerability exists in the au…9.8
- CVE-2026-4014A security flaw has been discovered in itsourcecode Cafe Res…9.8
- CVE-2026-40141A high-severity vulnerability exists in a web application co…9.9
- CVE-2026-40148PraisonAI is a multi-agent teams system. Prior to 4.5.128, t…6.5
- CVE-2026-40149PraisonAI is a multi-agent teams system. Prior to 4.5.128, t…7.3
- CVE-2026-4015A weakness has been identified in GPAC 26.03-DEV. Affected i…5.3
- CVE-2026-40150PraisonAIAgents is a multi-agent teams system. Prior to 1.5.…6.5
- CVE-2026-40151PraisonAI is a multi-agent teams system. Prior to 4.5.128, t…5.3
Are you affected by CVE-2026-40140?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST