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Vulnerabilities

Vulnerability · CVE-2026-25866

MobaXterm versions prior to 26.1 contain an uncontrolled search path element vulnerability.

Published Mar 9, 2026 · catalog updated Jun 17, 2026 · MobaXterm versions prior to

Check if you run it

No confirmed exploitation is on record for CVE-2026-25866. EPSS is 0.18%. Act only if a listed version of MobaXterm versions prior to is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (MobaXterm versions prior to).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Advisory link
Affected products
cpe mobatek/mobaxterm

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mobatek/mobaxtermversion unspecified

How to fix CVE-2026-25866

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-25866. EPSS is 0.18%. Act only if a listed version of MobaXterm versions prior to is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-428. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 9, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-25866

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-25866

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-25866

    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 malici

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.