CVE-2021-21488: SAP NetWeaver Knowledge Management

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

Knowledge Management versions 7.01, 7.02, 7.30, 7.31, 7.40, 7.50 allows a remote attacker with basic privileges to deserialize user-controlled data without verification, leading to insecure deserialization which triggers the attacker’s code, therefore impacting Availability.

Affected products

• SAP NetWeaver Knowledge Management: version 7.01 only; version 7.02 only; version 7.30 only; version 7.31 only; version 7.40 only; version 7.50 only

Published 2021-03-09. Last modified 2026-06-17.