How severe is CVE-2020-25237?

CVE-2020-25237 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2020-25237 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25237?

CVE-2020-25237 primarily affects Siemens Sinec Network Management System. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-25237?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-25237 published?

CVE-2020-25237 was published on 2021-02-09 and last updated on 2026-06-17.

CVE-2020-25237

CVE-2020-25237 is a high-severity vulnerability in Siemens Sinec Network Management System with a CVSS 3.x base score of 8.1. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Siemens Sinec Network Management System
Published: 2021-02-09
Last modified: 2026-06-17

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)

Frequently asked questions

What is CVE-2020-25237?: 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)
How severe is CVE-2020-25237?: CVE-2020-25237 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2020-25237 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25237?: CVE-2020-25237 primarily affects Siemens Sinec Network Management System. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-25237?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-25237 published?: CVE-2020-25237 was published on 2021-02-09 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:siemens:sinec_network_management_system:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_network_management_system:1.0:-:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_network_management_system:1.0:sp1:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_server:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_server:14.0:-:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_server:14.0:sp1:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_server:14.0:sp2:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_server:14.0:sp2_update1:*:*:*:*:*:*

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