Immediate Containment
! Restrict network exposure of Acronis Backup management interfaces pending remediation.
Exposure Reduction & Patching
🛡️ Apply Acronis mitigations for CVE-2026-87886 and place management interfaces behind vetted access paths.
📦 Upgrade Acronis Backup to the fixed release documented in the CVE-2026-87886 advisory.
Configuration & Credentials
⚙️ Review management interface access controls, accounts, and API usage after the incident window.
🔑 Rotate administrative credentials when unauthorized access cannot be excluded.
Evidence Preservation
📁 Preserve management interface access and audit logs before rotation.
Verification & Rollback
✓ Confirm deployed Backup version addresses CVE-2026-87886 and monitor authentication telemetry for recurrence.
↩️ Rollback: Follow the vendor supported upgrade and rollback procedure.