CVE-2020-25237

Name: CVE-2020-25237
Creator: NVD / NIST
Published: 2021-02-09T17:15:13.517+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 20.62%

Last modified Jun 17, 2026

CVE-2020-25237 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 20.62% chance of exploitation in the next 30 days.

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)

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

20.62%

97.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Siemens	Sinec Network Management System	< 1.0
Siemens	Sinec Network Management System	1.0
Siemens	Sinema Server	< 14.0
Siemens	Sinema Server	14.0

References

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

Timeline

Published: Feb 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25237?

How severe is CVE-2020-25237?

CVE-2020-25237 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 20.62% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25237?

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-2020-25237?

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

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Source: NVD / NIST