How severe is CVE-2026-25866?

CVE-2026-25866 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-25866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25866?

CVE-2026-25866 affects Mobatek Mobaxterm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25866?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-25866 have an EU (EUVD) identifier?

Yes. CVE-2026-25866 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10342.

When was CVE-2026-25866 published?

CVE-2026-25866 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2026-25866

CVE-2026-25866 is a high-severity vulnerability in Mobatek Mobaxterm with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-428.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10342
Weakness: CWE-428
Affected product: Mobatek Mobaxterm
Published: 2026-03-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-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 malicious executable earlier in the search order, resulting in arbitrary code execution in the context of the affected user.
How severe is CVE-2026-25866?: CVE-2026-25866 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-25866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25866?: CVE-2026-25866 affects Mobatek Mobaxterm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25866?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-25866 have an EU (EUVD) identifier?: Yes. CVE-2026-25866 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10342.
When was CVE-2026-25866 published?: CVE-2026-25866 was published on 2026-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mobatek:mobaxterm:*:*:*:*:home:*:*:*

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