CVE-2021-33724Network attack vector

Authenticated file deletion via user-controlled path

Published Oct 12, 2021 · Updated Aug 3, 2024

Path traversal in Siemens SINEC NMS before 1.0 SP2 Update 1 allows remote authenticated users to delete arbitrary files or directories. Siemens identifies a user-controlled path but has not disclosed the affected component or how the path escapes its intended directory. Low-privilege authenticated access is sufficient, and deletion can interrupt the service; no confidentiality or data-write impact is reported.

CVSS severity6.5
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Siemens SINEC NMS before 1.0 SP2 Update 1 allows remote authenticated users to delete arbitrary files or directories. Siemens identifies a user-controlled path but has not disclosed the affected component or how the path escapes its intended directory. Low-privilege authenticated access is sufficient, and deletion can interrupt the service; no confidentiality or data-write impact is reported.

The record

CVE
CVE-2021-33724
Published
Oct 12, 2021
Updated
Aug 3, 2024
Vendor
Siemens
Product
SINEC NMS
Classifications
CWE-22, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 12, 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 < V1.0 SP2 Update 1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SINEC NMSversion=All versions < V1.0 SP2 Update 1

Published CVSS scores

6.5Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
5.0NIST NVDAV:N/AC:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

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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