CVE-2021-33709Network attack vector

Application-token disclosure via malformed request error

Published Jul 13, 2021 · Updated Aug 3, 2024

Information disclosure in Siemens Teamcenter Active Workspace allows remote authenticated users to leak an application token through malformed requests. The request-processing path mishandles an error triggered by malformed input and exposes the token; Siemens has not published a more specific component or operation. Low-privileged network access is required, and the documented consequence is limited to token disclosure in versions before 4.3.9, before 5.0.7, and before 5.1.4.

CVSS severity4.3
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Siemens Teamcenter Active Workspace allows remote authenticated users to leak an application token through malformed requests. The request-processing path mishandles an error triggered by malformed input and exposes the token; Siemens has not published a more specific component or operation. Low-privileged network access is required, and the documented consequence is limited to token disclosure in versions before 4.3.9, before 5.0.7, and before 5.1.4.

The record

CVE
CVE-2021-33709
Published
Jul 13, 2021
Updated
Aug 3, 2024
Vendor
Siemens
Product
Teamcenter Active Workspace
Classifications
CWE-200, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 13, 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=All versions < V4.3.9
  2. Affected versionversion=All versions < V5.0.7
  3. Affected versionversion=All versions < V5.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · Teamcenter Active Workspaceversion=All versions < V4.3.9; version=All versions < V5.0.7; version=All versions < V5.1.4

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1528Steal Application Access Token

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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