How severe is CVE-2021-33664?

CVE-2021-33664 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-33664 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33664?

CVE-2021-33664 primarily affects Sap Netweaver Application Server Abap. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-33664?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-33664 published?

CVE-2021-33664 was published on 2021-06-09 and last updated on 2026-06-17.

CVE-2021-33664

CVE-2021-33664 is a medium-severity vulnerability in Sap Netweaver Application Server Abap with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sap Netweaver Application Server Abap
Published: 2021-06-09
Last modified: 2026-06-17

Description

SAP NetWeaver Application Server ABAP (Applications based on Web Dynpro ABAP), versions - SAP_UI - 750,752,753,754,755, SAP_BASIS - 702, 731 does not sufficiently encode user-controlled inputs, resulting in Cross-Site Scripting (XSS) vulnerability.

Frequently asked questions

What is CVE-2021-33664?: SAP NetWeaver Application Server ABAP (Applications based on Web Dynpro ABAP), versions - SAP_UI - 750,752,753,754,755, SAP_BASIS - 702, 731 does not sufficiently encode user-controlled inputs, resulting in Cross-Site Scripting (XSS) vulnerability.
How severe is CVE-2021-33664?: CVE-2021-33664 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-33664 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33664?: CVE-2021-33664 primarily affects Sap Netweaver Application Server Abap. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-33664?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-33664 published?: CVE-2021-33664 was published on 2021-06-09 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:sap:netweaver_application_server_abap:31:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:702:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:750:*:*:*:sap_ui:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:752:*:*:*:sap_ui:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:753:*:*:*:sap_ui:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:754:*:*:*:sap_ui:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:755:*:*:*:sap_ui:*:*:*

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