🛡️ CVE-2026-64637

🔴 CVSS 9.9 — Critical ✅ No Known Exploit CWE-269 NVD
9.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Improper privilege management in the XML-RPC API of Plesk before 18.0.80, allows an authenticated reseller to obtain an administrative session for the root user account.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-64637 is classified as CWE-269: Improper Privilege Management. Privileges are assigned, dropped or restored incorrectly, leaving an actor with more access than intended.

Affected software

CVE-2026-64637 is recorded against 1 package.

  • unknown

Timeline and source

Published on 7 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

support.plesk.com

Details

Severity CRITICAL
CVSS Score 9.9
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE CWE-269
Public Exploit ✅ No
Source NVD
Published 2026-08-07
Updated 2026-08-11
Modified 2026-08-07
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

Exploit Protection

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CVE-2026-64637 carries CVSS 9.9 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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