CVE-2026-87886: Acronis Backup Incorrect Default Permissions Vulnerability
In CISA’s Known Exploited Vulnerabilities catalog: Acronis Backup Incorrect Default Permissions Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
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.
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · CWE-276
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Acronis: Acronis Backup extension for PleskAcronis: Acronis Backup plugin for cPanel & WHMAcronis: Acronis Backup plugin for DirectAdmin
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- security-advisory.acronis.com/advisories/SEC-10986 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)