Is CVE-2026-5053 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-5053, but active exploitation has not been confirmed.

Can CVE-2026-5053 be exploited remotely?

No. CVE-2026-5053 requires local access to exploit.

What is the CVSS score of CVE-2026-5053?

CVE-2026-5053 has a CVSS score of 7.1 (HIGH).

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HIGHPOC

CVE-2026-5053

CWE-73Published: April 11, 2026· Updated: Apr 15, 2026

7.1

CVSS v3.1

Official Description

NoMachine External Control of File Path Arbitrary File Deletion Vulnerability. This vulnerability allows local attackers to delete arbitrary files on affected installations of NoMachine. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the handling of environment variables. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to delete files in the context of root. Was ZDI-CAN-28644.

NVD Source

Technical Analysis

CVE-2026-5053 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.1.

A proof-of-concept (PoC) exploit exists for CVE-2026-5053. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.