Acronis Backup Incorrect Default Permissions Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 16/09/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| acronis backup | = 1.9.3< 1.2.3< 1.8.11< 1.9.3 | 1.2.31.8.111.9.3 |
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.
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