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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.

PUBLISHED Reserved 2026-02-06 | Published 2026-03-09 | Updated 2026-03-09 | Assigner VulnCheck




HIGH: 8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-428 Unquoted search path or element

Product status

Default status
unaffected

Any version before 26.1
affected

Credits

Spektion Research Team finder

VulnCheck coordinator

References

mobaxterm.mobatek.net/download-home-edition.html release-notes patch

www.vulncheck.com/...mobaxterm-notepad-unquoted-service-path third-party-advisory

cve.org (CVE-2026-25866)

nvd.nist.gov (CVE-2026-25866)

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