CVE-2021-21489

Name: CVE-2021-21489
Creator: NVD / NIST
Published: 2021-09-14T12:15:08.12+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2021-21489 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. SAP NetWeaver Enterprise Portal versions - 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, does not sufficiently encode user related data, resulting in Stored Cross-Site Scripting (XSS) vulnerability. This would allow an attacker with administrative privileges to store a malicious script on the portal. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

SAP NetWeaver Enterprise Portal versions - 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, does not sufficiently encode user related data, resulting in Stored Cross-Site Scripting (XSS) vulnerability. This would allow an attacker with administrative privileges to store a malicious script on the portal. The execution of the script content by a victim registered on the portal could compromise the confidentiality and integrity of portal content.

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.56%

42.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Sap	Netweaver Enterprise Portal	7.10
Sap	Netweaver Enterprise Portal	7.11
Sap	Netweaver Enterprise Portal	7.20
Sap	Netweaver Enterprise Portal	7.30
Sap	Netweaver Enterprise Portal	7.31
Sap	Netweaver Enterprise Portal	7.40
Sap	Netweaver Enterprise Portal	7.50

References

https://launchpad.support.sap.com/#/notes/3082219Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405Vendor Advisory
https://launchpad.support.sap.com/#/notes/3082219Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405Vendor Advisory

Timeline

Published: Sep 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21489?

How severe is CVE-2021-21489?

CVE-2021-21489 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21489?

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-2021-21489?

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

Scan your code now

Source: NVD / NIST