CVE-2021-33436
Last modified
CVE-2021-33436 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. NoMachine for Windows prior to version 6.15.1 and 7.5.2 suffer from local privilege escalation due to the lack of safe DLL loading. This vulnerability allows local non-privileged users to perform DLL Hijacking via any writable directory listed under the system path and ultimately execute code as NT AUTHORITY\SYSTEM.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
NoMachine for Windows prior to version 6.15.1 and 7.5.2 suffer from local privilege escalation due to the lack of safe DLL loading. This vulnerability allows local non-privileged users to perform DLL Hijacking via any writable directory listed under the system path and ultimately execute code as NT AUTHORITY\SYSTEM.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nomachine | Nomachine | >= 6.0.0, < 6.15.1 |
| Nomachine | Nomachine | >= 7.0, < 7.5.2 |
References
- https://github.com/active-labs/Advisories/blob/master/2021/ACTIVE-2021-001.mdThird Party Advisory
- https://knowledgebase.nomachine.com/SU05S00223Release Notes, Vendor Advisory
- https://knowledgebase.nomachine.com/SU05S00224Release Notes, Vendor Advisory
- https://knowledgebase.nomachine.com/TR05S10236Vendor Advisory
- https://github.com/active-labs/Advisories/blob/master/2021/ACTIVE-2021-001.mdThird Party Advisory
- https://knowledgebase.nomachine.com/SU05S00223Release Notes, Vendor Advisory
- https://knowledgebase.nomachine.com/SU05S00224Release Notes, Vendor Advisory
- https://knowledgebase.nomachine.com/TR05S10236Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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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.
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