CVE-2021-20803: Cybozu Remote Service Manager

Medium severity, CVSS 5.4. EPSS: 0.7% chance of exploitation in the next 30 days.

Operation restriction bypass in the management screen of Cybozu Remote Service 3.1.8 to 3.1.9 allows a remote authenticated attacker to alter the data of the management screen.

Affected products

• Cybozu Remote Service Manager: version 3.1.8 only; version 3.1.9 only

Published 2021-10-13. Last modified 2026-06-17.