CVE-2026-5054: NoMachine External Control of File Path Local Privilege Escalation Vulnerability

Q: How do I fix CVE-2026-5054?

nomachine: upgrade to 9.4.14. Exact commands for each OS are on this page.

Q: Is CVE-2026-5054 being exploited?

CVE-2026-5054 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-5054 affect?

CVE-2026-5054 affects nomachine. Severity is high (CVSS 7.8). 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

Routine

HIGH 7.8UPGRADE

CVE-2026-5054 is a high-severity flaw (CVSS 7.8) affecting nomachine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-73
Published	2026-04-11
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: nomachine

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-11 01:16 UTCPublished CVE record published
2026-06-17 10:58 UTCUpdated Record last modified

nomachine nomachine UPGRADE

Affected: < 9.4.14

Fixed in: 9.4.14

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy nomachine || rpm -q nomachine || nomachine --version

2. UPGRADE to 9.4.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade nomachine

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nomachine

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5054?

nomachine: upgrade to 9.4.14. Exact commands for each OS are on this page.

Is CVE-2026-5054 being exploited?

CVE-2026-5054 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5054 affect?

CVE-2026-5054 affects nomachine. Severity is high (CVSS 7.8). 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

How urgent is CVE-2026-5054?

Priority 30/100. High severity

Related CVEs

CVE-2026-5055 HIGH 7.8 UPGRADE NoMachine Uncontrolled Search Path Element Local Privilege Escalation Vulnerability
CVE-2026-5053 HIGH 7.1 UPGRADE NoMachine External Control of File Path Arbitrary File Deletion Vulnerability

References

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