CVE-2025-66430Network attack vector

Authenticated root command execution via Apache configuration injection

Published Dec 12, 2025 · Updated Dec 12, 2025

Command injection in Plesk for Linux 18.0 allows remote authenticated users to execute arbitrary commands as root through protected-directory settings. The Password-Protected Directories feature writes attacker-controlled data into Apache configuration through ProtectedDirectories.php without restricting it to safe values. Access to that feature is required; successful injection grants command execution with root authority.

CVSS severity9.1
Critical
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Plesk for Linux 18.0 allows remote authenticated users to execute arbitrary commands as root through protected-directory settings. The Password-Protected Directories feature writes attacker-controlled data into Apache configuration through ProtectedDirectories.php without restricting it to safe values. Access to that feature is required; successful injection grants command execution with root authority.

The record

CVE
CVE-2025-66430
Published
Dec 12, 2025
Updated
Dec 12, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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