CVE-2026-87886: Acronis Backup

By CISA Known Exploited Vulnerabilities1 min readPublished 16 September 2026

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-87886

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Acronis Backup Incorrect Default Permissions Vulnerability Acronis Backup plugin for cPanel & WHM and extension for Plesk contains an incorrect default permissions vulnerability that could allow for privilege escalation. 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) guidan...

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