How severe is CVE-2021-33673?

CVE-2021-33673 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-33673 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33673?

CVE-2021-33673 affects Sap Contact Center. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33673?

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

When was CVE-2021-33673 published?

CVE-2021-33673 was published on 2021-09-14 and last updated on 2026-06-17.

CVE-2021-33673

CVE-2021-33673 is a medium-severity vulnerability in Sap Contact Center with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sap Contact Center
Published: 2021-09-14
Last modified: 2026-06-17

Description

Under certain conditions, SAP Contact Center - version 700,does not sufficiently encode user-controlled inputs and persists in them. This allows an attacker to exploit a Stored Cross-Site Scripting (XSS) vulnerability when a user browses through the employee directory and to execute arbitrary code on the victim's browser. Due to the usage of ActiveX in the application, the attacker can further execute operating system level commands.

Frequently asked questions

What is CVE-2021-33673?: Under certain conditions, SAP Contact Center - version 700,does not sufficiently encode user-controlled inputs and persists in them. This allows an attacker to exploit a Stored Cross-Site Scripting (XSS) vulnerability when a user browses through the employee directory and to execute arbitrary code on the victim's browser. Due to the usage of ActiveX in the application, the attacker can further execute operating system level commands.
How severe is CVE-2021-33673?: CVE-2021-33673 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-33673 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33673?: CVE-2021-33673 affects Sap Contact Center. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33673?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-33673 published?: CVE-2021-33673 was published on 2021-09-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sap:contact_center:700:*:*:*:*:*:*:*

More vulnerabilities in Sap Contact Center

CVE-2021-33672 — Critical (CVSS 9.6): Due to missing encoding in SAP Contact Center's Communication Desktop component- version 700, an attacker could send…
CVE-2021-33675 — Medium (CVSS 6.1): Under certain conditions, SAP Contact Center - version 700, does not sufficiently encode user-controlled inputs. This…
CVE-2021-33674 — Medium (CVSS 6.1): Under certain conditions, SAP Contact Center - version 700, does not sufficiently encode user-controlled inputs. This…

All CVEs affecting Sap Contact Center →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →