- High 7.8
- Known exploited (CISA KEV)
CVE-2026-87886
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.
Scores
The facts
- Published
- 17 September 2026
- Last changed
- 18 September 2026
- NVD status
- Analyzed
- Severity
- High, CVSS 7.8 out of 10 (version 3.0)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- Affects
- acronis acronis backup
- Known exploited
- Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 16 September 2026.
- EPSS
- 0.2% chance of exploitation activity in the next 30 days (percentile 13).
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