CVE-2021-33665

Name: CVE-2021-33665
Creator: NVD / NIST
Published: 2021-06-09T14:15:10.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2021-33665 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. SAP NetWeaver Application Server ABAP (Applications based on SAP GUI for HTML), versions - KRNL64NUC - 7.49, KRNL64UC - 7.49,7.53, KERNEL - 7.49,7.53,7.77,7.81,7.84, does not sufficiently encode user-controlled inputs, resulting in Cross-Site Scripting (XSS) vulnerability.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

SAP NetWeaver Application Server ABAP (Applications based on SAP GUI for HTML), versions - KRNL64NUC - 7.49, KRNL64UC - 7.49,7.53, KERNEL - 7.49,7.53,7.77,7.81,7.84, does not sufficiently encode user-controlled inputs, resulting in Cross-Site Scripting (XSS) vulnerability.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.47%

37.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Sap	Netweaver Application Server Abap	kernel_7.49
Sap	Netweaver Application Server Abap	kernel_7.53
Sap	Netweaver Application Server Abap	kernel_7.77
Sap	Netweaver Application Server Abap	kernel_7.81
Sap	Netweaver Application Server Abap	kernel_7.84
Sap	Netweaver Application Server Abap	krnl64nuc_7.49
Sap	Netweaver Application Server Abap	krnl64uc_7.49
Sap	Netweaver Application Server Abap	krnl64uc_7.53

References

https://launchpad.support.sap.com/#/notes/3028370Permissions Required, Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999Vendor Advisory
https://launchpad.support.sap.com/#/notes/3028370Permissions Required, Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-33665?

How severe is CVE-2021-33665?

CVE-2021-33665 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33665?

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-2021-33665?

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

Scan your code now

Source: NVD / NIST