CVE-2026-25866
MobaXterm < 26.1 Notepad++ Unquoted Service Path
- State
- Published
- Severity
- 8.5 High
- Published
- Mar 9, 2026
- Updated
- Mar 11, 2026
- Reserved
- Feb 6, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-428 Unquoted search path or element
Affected Products
| Product | Versions |
|---|---|
MobaXtermMobatek |
|
References
- https://mobaxterm.mobatek.net/download-home-edition.htmlrelease-notespatch
- https://www.vulncheck.com/advisories/mobaxterm-notepad-unquoted-service-paththird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.