A Time-of-check Time-of-use (TOCTOU) race condition leading to insecure symlink following in Plesk causes local privilege escalation to roo…

published 2026-09-10 59 d ago modified 2026-09-10 59 d ago also EUVD-2026-75594

cvss: 9.9; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 59 d ago (2026-09-10)

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	9.9	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

WebPros Plesk

Classification

Weakness

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

support.plesk.com /hc/en-us/articles/43248932867351-Vulnerability-in-Plesk-s-Backup-Manager-symlink-race-during-restore-allows-r

Sources

CVE List CVE-2026-68488
NVD CVE-2026-68488

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary