How severe is CVE-2025-66431?

CVE-2025-66431 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-66431?

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-2025-66431 have an EU (EUVD) identifier?

Yes. CVE-2025-66431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200986.

When was CVE-2025-66431 published?

CVE-2025-66431 was published on 2025-12-03 and last updated on 2026-06-17.

CVE-2025-66431

CVE-2025-66431 is a high-severity vulnerability 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-61.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-200986
Weakness: CWE-61
Published: 2025-12-03
Last modified: 2026-06-17

Description

WebPros Plesk before 18.0.73.5 and 18.0.74 before 18.0.74.2 on Linux allows remote authenticated users to execute arbitrary code as root via domain creation. The attacker needs "Create and manage sites" with "Domains management" and "Subdomains management."

Frequently asked questions

What is CVE-2025-66431?: WebPros Plesk before 18.0.73.5 and 18.0.74 before 18.0.74.2 on Linux allows remote authenticated users to execute arbitrary code as root via domain creation. The attacker needs "Create and manage sites" with "Domains management" and "Subdomains management."
How severe is CVE-2025-66431?: CVE-2025-66431 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-66431?: 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-2025-66431 have an EU (EUVD) identifier?: Yes. CVE-2025-66431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200986.
When was CVE-2025-66431 published?: CVE-2025-66431 was published on 2025-12-03 and last updated on 2026-06-17.

References

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