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Vulnerability record · CVE-2020-25237 · published 9 February 2021

CVE-2020-25237: Siemens sinec network management system path traversal vulnerability

Siemens · Sinec Network Management System

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP1 Update 1), SINEMA Server (All versions < V14.0 SP2 Update 2). When uploading files to an affected system using a zip container, the system does not correctly check if the relative file path of the extracted files is still within the intended target directory. With this an attacker could create or overwrite arbitrary files on an affected system. This type of vulnerability is also known as 'Zip-Slip'. (ZDI-CAN-12054)

8.1 CVSS 3.1 High EPSS 21% · top 2.6% CWE-22 · Path traversal
8.1CVSS 3.1 base score, v2 5.5
21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP1 Update 1), SINEMA Server (All versions < V14.0 SP2 Update 2). When uploading files to an affected system using a zip container, the system does not correctly check if the relative file path of the extracted files is still within the intended target directory. With this an attacker could create or overwrite arbitrary files on an affected system. This type of vulnerability is also known as 'Zip-Slip'. (ZDI-CAN-12054)

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-156833.pdf Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-03 Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-253/ Third Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-156833.pdf Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-03 Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-253/ Third Party AdvisoryVDB Entry

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-25237), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.