CVE-2026-68488 Plesk - Privilege Escalation

Plesk contains a TOCTOU race condition caused by insecure symlink following, letting local attackers escalate privileges to root via arbitrary file or directory ownership takeover, exploit requires local access.

CVSS base score 9.9 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.40% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
10 September 2026
Updated
15 October 2026
Weakness
CWE-367

Vendor fix

Update to the latest version of Plesk.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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