CVE-2025-66430
Plesk 18.0 has Incorrect Access Control.
9.1 Critical
Plesk 18.0 has Incorrect Access Control.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
0.55%Up 0.5 points since Dec 13, 2025
What each source reports
CVE List Score used
Plesk 18.0 has Incorrect Access Control.
- Record
CVE-2025-66430- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2025-203102
Plesk 18.0 has Incorrect Access Control.
- Record
EUVD-2025-203102- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-r6m5-94xr-hjvj
Plesk 18.0 has Incorrect Access Control.
Plesk 18.0 has Incorrect Access Control.
- Record
GHSA-r6m5-94xr-hjvj- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
Plesk 18.0 has Incorrect Access Control.
- Record
CVE-2025-66430- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-66430 is a critical vulnerability (CVSS 9.1) in Plesk, published December 12, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.55%, the 46th percentile. No source names a fixed version.
References
docs.plesk.com/release-notes/obsidian/whats-new
support.plesk.com/hc/en-us/articles/36261922405015--CVE-2025-66430-Security-vulnerability-in-Password-Protected-Directories-allows-Plesk-users-to-gain-root-level-access-to-a-Plesk-server
nvd.nist.gov/vuln/detail/CVE-2025-66430
github.com/advisories/GHSA-r6m5-94xr-hjvj