What is CVE-2026-5053?

CVE-2026-5053 is a high-severity vulnerability in Nomachine, classified under External Control of File Name or Path. CVSS score: 7.1/10. Published 2026-04-11.

How severe is CVE-2026-5053?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Nomachine

CVE-2026-5053

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.

EPSS: 0.001 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Nomachine — versions 9.3.7

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2026-5053?: CVE-2026-5053 is a high-severity vulnerability in Nomachine, classified under External Control of File Name or Path. CVSS score: 7.1/10. Published 2026-04-11.
How severe is CVE-2026-5053?: High severity. CVSS v3 base score is 7.1 out of 10.