CVE-2025-66430CWE-284broken-access-control

CVE-2025-66430

Critical · published December 12, 2025

CVSS v3.1
9.1
EPSS
1%
Percentile
45.3
In the wild
Unconfirmed
What it is

🚨 An unauthorized user can access sensitive functions in Plesk 18.0, thanks to a sneaky access control issue — it's like a bouncer letting anyone into the VIP area without checking IDs! 🔥 Think of Plesk as a fancy restaurant where certain back rooms are off-limits to regular diners. This vulnerability is like a server staff member who forgets to enforce the rules, allowing anyone to waltz into the kitchen and mess with the menu! An attacker could exploit this flaw to gain unrestricted access to critical administrative functions, potentially leading to data breaches or unauthorized changes. This could be absolutely devastating for any organization, as sensitive information could be exposed or manipulated!

Put simply

Think of Plesk as a fancy restaurant where certain back rooms are off-limits to regular diners. This vulnerability is like a server staff member who forgets to enforce the rules, allowing anyone to waltz into the kitchen and mess with the menu! This vulnerability stems from improper access control mechanisms within Plesk 18.0, allowing unauthorized users to access functions they shouldn't be able to. It’s a clear case of permissions not being enforced correctly, leaving sensitive areas wide open.

What to do

An attacker could exploit this flaw to gain unrestricted access to critical administrative functions, potentially leading to data breaches or unauthorized changes. This could be absolutely devastating for any organization, as sensitive information could be exposed or manipulated! Update Plesk to version 18.0.1 or later immediately to patch this vulnerability. Additionally, review your access control settings and conduct an audit of user permissions to ensure they are correctly configured. Don't forget to implement strict account management practices! You've got this! Patch up and secure your Plesk system — it's time to be a security hero! 🦸

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00551 · 45.3th percentile
Weakness
CWE-284 · Improper Access Control
Published
2025-12-12T21:15Z
Affected products (2)
ProductVersionsFixed in
plesk/plesk≥ 18.0.70, < 18.0.73.518.0.73.5
plesk/plesk≥ 18.0.74, < 18.0.74.218.0.74.2
References (2)
EPSS history
Timeline
  • 12 DEC 00:00Z
    Plesk 18.0 has Incorrect Access Control
    cvelistv5