HIGH CISA KEV

CVE-2026-87886

CVSS v3

7.8

HIGH

EPSS Score

0.3 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

Local privilege escalation due to insecure file permissions. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Backup extension for Plesk (Linux) before build 1.8.11.638, Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.3.238.

CISA Known Exploited Vulnerability

Date Added: 2026-09-16
Patch Due Date: 2026-09-19
Ransomware Use: Unknown

Technical details

CVSS v3 Vector: 3.0
Published: 2026-09-17
Last Modified: 2026-09-18

Frequently asked questions

What is CVE-2026-87886?

Is CVE-2026-87886 actively exploited?

Yes. CVE-2026-87886 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-19.

What is the CVSS score for CVE-2026-87886?

CVE-2026-87886 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string 3.0.

Is CVE-2026-87886 affecting your environment?

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