ZDI-26-248: NoMachine External Control of File Path Local Privilege Escalation Vulnerability
Source Zero Day Initiative
Not known to be exploited · fixed in 9.4.14 : patch affected systems soon.
Data as of 30 Oct 2026, 11:52 UTC
Rated High by Zero Day Initiative · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9.4.14
Exploitation evidence
Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
AI-suggested
NoMachine has released an official fix in version 9.4.14. Users should upgrade to this version or later to remediate the vulnerability. Since this is a local privilege escalation, restricting local code execution permissions and applying the patch are the primary mitigations. NoMachine is not a cloud service; patching must be applied by system administrators.
Description
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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-5054.