CVE-2021-33673Network attack vector

OS command execution via persisted directory script

Published Sep 14, 2021 · Updated Aug 3, 2024

Stored XSS in SAP Contact Center before 700 allows remote authenticated users to execute code when an employee-directory entry is viewed. The directory workflow persists user-controlled values without sufficient output encoding, causing the browser to interpret a stored value as script. Exploitation requires high-privileged access and victim interaction; where ActiveX is enabled, the script can execute operating-system commands.

CVSS severity6.1
Medium
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in SAP Contact Center before 700 allows remote authenticated users to execute code when an employee-directory entry is viewed. The directory workflow persists user-controlled values without sufficient output encoding, causing the browser to interpret a stored value as script. Exploitation requires high-privileged access and victim interaction; where ActiveX is enabled, the script can execute operating-system commands.

The record

CVE
CVE-2021-33673
Published
Sep 14, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP Contact Center
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 700

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SAP SE · SAP Contact Centerversion=< 700

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.3SAP SECVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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