How severe is CVE-2026-5054?

CVE-2026-5054 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5054 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5054?

CVE-2026-5054 affects Nomachine. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5054?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5054 have an EU (EUVD) identifier?

Yes. CVE-2026-5054 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21653.

When was CVE-2026-5054 published?

CVE-2026-5054 was published on 2026-04-11 and last updated on 2026-06-17.

CVE-2026-5054

CVE-2026-5054 is a high-severity vulnerability in Nomachine with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-73.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21653
Weakness: CWE-73
Affected product: Nomachine
Published: 2026-04-11
Last modified: 2026-06-17

Description

NoMachine External Control of File Path Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges 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 command line parameters. 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 escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-28630.

Frequently asked questions

What is CVE-2026-5054?: NoMachine External Control of File Path Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges 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 command line parameters. 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 escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-28630.
How severe is CVE-2026-5054?: CVE-2026-5054 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5054 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5054?: CVE-2026-5054 affects Nomachine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5054?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5054 have an EU (EUVD) identifier?: Yes. CVE-2026-5054 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21653.
When was CVE-2026-5054 published?: CVE-2026-5054 was published on 2026-04-11 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-26-248/

Affected products (1)

cpe:2.3:a:nomachine:nomachine:*:*:*:*:*:*:*:*

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