VulnerabilityAwaiting Analysis

CVE-2026-68488

A Time-of-check Time-of-use (TOCTOU) race condition leading to insecure symlink following in Plesk causes local privilege escalation to root via arbitrary file/directory ownership takeover.

CRITICAL 9.9EPSS 0.20%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A Time-of-check Time-of-use (TOCTOU) race condition leading to insecure symlink following in Plesk causes local privilege escalation to root via arbitrary file/directory ownership takeover.

CVSS 3.0: 9.9 CRITICALCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.20% probability · 10th percentile
CISA KEV: Not listed
Weakness: CWE-367
Source: support@hackerone.com

References

https://support.plesk.com/hc/en-us/articles/43248932867351-Vulnerability-in-Plesk-s-Backup-Manager-symlink-race-during-restore-allows-root-privilege-escalation

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.