CVE-2021-33710Network attack vector

Browser script execution via reflected link input

Published Jul 13, 2021 · Updated Aug 3, 2024

Reflected XSS in Siemens Teamcenter Active Workspace before 4.3.9, 5.0.7, or 5.1.4 allows remote attackers to execute JavaScript. The web interface reflects unneutralized link-supplied input into a page, but Siemens has not disclosed the affected endpoint or parameter. Exploitation requires a user to follow a crafted link, and the resulting script executes in that user's browser context.

CVSS severity6.1
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Siemens Teamcenter Active Workspace before 4.3.9, 5.0.7, or 5.1.4 allows remote attackers to execute JavaScript. The web interface reflects unneutralized link-supplied input into a page, but Siemens has not disclosed the affected endpoint or parameter. Exploitation requires a user to follow a crafted link, and the resulting script executes in that user's browser context.

The record

CVE
CVE-2021-33710
Published
Jul 13, 2021
Updated
Aug 3, 2024
Vendor
Siemens
Product
Teamcenter Active Workspace
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

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

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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
Privilegesunauthenticated
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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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