CVE-2026-87886

Local Privilege Escalation via Insecure File Permissions in Acronis Backup Plugins

Published Sep 17, 2026 CVSS 3.0 · 7.8 High EPSS < 1% KEV · Listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Local Privilege Escalation via Insecure File Permissions in Acronis Backup Plugins
Type Values Removed Values Added
First Time appeared Acronis acronis Backup
Linux
Linux linux Kernel
CPEs cpe:2.3:a:acronis:acronis_backup:*:*:*:*:*:cpanel:*:*
cpe:2.3:a:acronis:acronis_backup:*:*:*:*:*:directadmin:*:*
cpe:2.3:a:acronis:acronis_backup:*:*:*:*:*:plesk:*:*
cpe:2.3:a:acronis:acronis_backup:1.9.3:-:*:*:*:cpanel:*:*
cpe:2.3:a:acronis:acronis_backup:1.9.3:hotfix1:*:*:*:cpanel:*:*
cpe:2.3:a:acronis:acronis_backup:1.9.3:hotfix2:*:*:*:cpanel:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Vendors & Products Acronis acronis Backup
Linux
Linux linux Kernel
References
Type Values Removed Values Added
First Time appeared Acronis
Acronis backup Extension For Plesk
Acronis backup Plugin For Cpanel \& Whm
Acronis backup Plugin For Directadmin
Vendors & Products Acronis
Acronis backup Extension For Plesk
Acronis backup Plugin For Cpanel \& Whm
Acronis backup Plugin For Directadmin
Type Values Removed Values Added
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 1.2.4.238. 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.
Type Values Removed Values Added
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 1.2.4.238.
Weaknesses CWE-276
References
Metrics cvssV3_0

{'score': 7.8, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

kev

{'dateAdded': '2026-09-16T00:00:00+00:00', 'dueDate': '2026-09-19T00:00:00+00:00'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Acronis
Published
Updated
Sep 18, 2026, 2:33 PM
Reserved
Sep 9, 2026, 2:04 PM
Status
Analyzed
Published
Sep 17, 2026, 11:18 PM
Modified
Sep 18, 2026, 7:29 PM