What is CVE-2021-33672?

CVE-2021-33672 is a critical-severity vulnerability in SAP Contact Center, classified under Improper Encoding or Escaping of Output. CVSS score: 9.6/10. Published 2021-09-14.

How severe is CVE-2021-33672?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Vulnerability in SAP Contact Center

CVE-2021-33672

Due to missing encoding in SAP Contact Center's Communication Desktop component- version 700, an attacker could send malicious script in chat message. When the message is accepted by the chat recipient, the script gets executed in their scope. Due to the usage of ActiveX in the application, the attacker can further execute operating system level commands in the chat recipient's scope. This could lead to a complete compromise of their confidentiality, integrity, and could temporarily impact their availability.

Published 2021-09-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

SAP Contact Center — versions 700
SAP Se Contact Center — versions < 700

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

wiki.scn.sap.com/wiki/pages/viewpage.action (Vendor Advisory)
launchpad.support.sap.com/ (Permissions Required)

Frequently asked questions

What is CVE-2021-33672?: CVE-2021-33672 is a critical-severity vulnerability in SAP Contact Center, classified under Improper Encoding or Escaping of Output. CVSS score: 9.6/10. Published 2021-09-14.
How severe is CVE-2021-33672?: Critical severity. CVSS v3 base score is 9.6 out of 10.