CVE-2026-25866

HIGH
2026-03-09 [email protected]
7.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:56 vuln.today
CVE Published
Mar 09, 2026 - 16:16 nvd
HIGH 7.8

Tags

RCE

Description

MobaXterm versions prior to 26.1 contain an uncontrolled search path element vulnerability. The application calls WinExec to execute Notepad++ without a fully qualified executable path when opening remote files. An attacker can exploit the search path behavior by placing a malicious executable earlier in the search order, resulting in arbitrary code execution in the context of the affected user.

Analysis

Arbitrary code execution in MobaXterm prior to version 26.1 allows local attackers to hijack the application's search path when it launches Notepad++ without a fully qualified path, enabling malicious executable injection. An authenticated user can exploit this flaw by placing a crafted executable earlier in the system PATH to achieve code execution with the privileges of the MobaXterm user. …

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Remediation

Within 24 hours: Inventory all MobaXterm installations and identify affected versions (prior to 26.1). Within 7 days: Restrict MobaXterm usage to trusted network segments only and disable remote file opening features where operationally feasible. …

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Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0

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CVE-2026-25866 vulnerability details – vuln.today
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