CVE-2026-87886 Acronis Backup Incorrect Default Permissions
Local attackers can escalate privileges due to insecure file permissions in Acronis Backup plugins for cPanel, Plesk, and DirectAdmin.
- Exploited in the wild
- Since 16 Sep 2026
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-87886?
CVE-2026-87886 is a high-severity vulnerability in Acronis Backup extension for Plesk, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-276
Which versions are affected by CVE-2026-87886?
It affects 1 product.
Products include Acronis Acronis Backup.
How do I fix CVE-2026-87886?
No fix has been published for CVE-2026-87886 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 19 Sep 2026.
Is CVE-2026-87886 being exploited?
Yes. Attackers have exploited CVE-2026-87886 in the wild since at least 16 Sep 2026.
Sources
Also known as GHSA-hrq3-qgq7-jm9x.