CVE-2021-33436

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.

7.3

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.04%

Vendor Advisory nomachine.com Vendor Advisory nomachine.com Vendor Advisory nomachine.com

Affected: n/a n/a

References

Link	Tags
https://github.com/active-labs/Advisories/blob/master/2021/ACTIVE-2021-001.md	third party advisory
https://knowledgebase.nomachine.com/TR05S10236	vendor advisory
https://knowledgebase.nomachine.com/SU05S00224	release notes vendor advisory
https://knowledgebase.nomachine.com/SU05S00223	release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-33436?: CVE-2021-33436 has been scored as a high severity vulnerability.
How to fix CVE-2021-33436?: To fix CVE-2021-33436, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33436 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-33436 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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