CVE-2021-33726

Name: CVE-2021-33726
Creator: NVD / NIST
Published: 2021-10-12T10:15:11.913+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.18%

Last modified Jun 17, 2026

CVE-2021-33726 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system allows to download arbitrary files under a user controlled path and does not correctly check if the relative path is still within the intended target directory.. EPSS estimates a 1.18% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system allows to download arbitrary files under a user controlled path and does not correctly check if the relative path is still within the intended target directory.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.18%

63.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Siemens	Sinec Nms	< 1.0
Siemens	Sinec Nms	1.0

References

https://cert-portal.siemens.com/productcert/pdf/ssa-163251.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-163251.pdfPatch, Vendor Advisory

Timeline

Published: Oct 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33726?

How severe is CVE-2021-33726?

CVE-2021-33726 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.18% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33726?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-33726?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST