CVSS 3.1
9.0 criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HCVE-2021-26566
Critical (9.0) in synology. EPSS 1.5% chance of exploitation in the next 30 days.
Insertion of sensitive information into sent data vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary commands via inbound QuickConnect traffic.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-200, CWE-201
- Published
- Modified
- Record from
- the NVD, synced
Affected
- synology:diskstation_manager
- synology:diskstation_manager_unified_controller
- synology:skynas_firmware
- synology:vs960hd_firmware