CVE-2021-21488

Name: CVE-2021-21488
Creator: NVD / NIST
Published: 2021-03-09T15:15:15.13+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.29%

Last modified Jun 17, 2026

CVE-2021-21488 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 1.29% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.29%

66.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Sap	Netweaver Knowledge Management	7.01
Sap	Netweaver Knowledge Management	7.02
Sap	Netweaver Knowledge Management	7.30
Sap	Netweaver Knowledge Management	7.31
Sap	Netweaver Knowledge Management	7.40
Sap	Netweaver Knowledge Management	7.50

References

https://launchpad.support.sap.com/#/notes/2983436Permissions Required, Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=571343107Vendor Advisory
https://launchpad.support.sap.com/#/notes/2983436Permissions Required, Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=571343107Vendor Advisory

Timeline

Published: Mar 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21488?

How severe is CVE-2021-21488?

CVE-2021-21488 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21488?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21488?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST