How severe is CVE-2025-66428?

CVE-2025-66428 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66428 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-66428?

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-2025-66428 have an EU (EUVD) identifier?

Yes. CVE-2025-66428 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3789.

When was CVE-2025-66428 published?

CVE-2025-66428 was published on 2026-01-22 and last updated on 2026-06-17.

CVE-2025-66428

CVE-2025-66428 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3789
Weakness: CWE-22
Published: 2026-01-22
Last modified: 2026-06-17

Description

An issue with WordPress directory names in WebPros WordPress Toolkit before 6.9.1 allows privilege escalation.

Frequently asked questions

What is CVE-2025-66428?: An issue with WordPress directory names in WebPros WordPress Toolkit before 6.9.1 allows privilege escalation.
How severe is CVE-2025-66428?: CVE-2025-66428 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66428 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-66428?: 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-2025-66428 have an EU (EUVD) identifier?: Yes. CVE-2025-66428 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3789.
When was CVE-2025-66428 published?: CVE-2025-66428 was published on 2026-01-22 and last updated on 2026-06-17.

References

https://docs.plesk.com/release-notes/obsidian/change-log/#wordpress-toolkit-6.9.1

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