CVE-2020-25237
No exploitation reported by the sources we read.
- Published2021-02-09
- Fixed in1.0
- WeaknessCWE-22
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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)
Timeline
dates in UTC- 2021-02-0917:15CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-25237?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-25237?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | < 1.0 | 1.0 | NVD |
| 1.0 | = 1.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 14.0 | < 14.0 | 14.0 | NVD |
| 14.0 | = 14.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Siemens SINEMA Server & SINEC NMS
Siemens SINEC NMS: All versions < V1.0 SP1 Update 1 · Siemens SINEMA Server: All versions < V14.0 SP2 Update 2
Fix
- Update Siemens sinec network management system to 1.0
- Vendor fix CISA ICSA-21-040-03 · 1 productUpdate to V1.0 SP1 Update 1 or later version
- Vendor fix CISA ICSA-21-040-03 · 1 productUpdate to V14.0 SP2 Update 2 or later version
- Mitigation from the vendor CISA ICSA-21-040-03 · 2 productsRestrict access to the affected components to trusted personnel.
Advisories and patches
- cert-portal.siemens.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.18.1read 2026-10-23
- NVDCVSS 2.05.5read 2026-10-23
- CNAweakness (CWE)CWE-22read 2026-10-23
- FIRST EPSSEPSS score20.6 %read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- Published
- 2021-02-09
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-25237?
Is CVE-2020-25237 actively exploited?
What is the CVSS score for CVE-2020-25237?
Running SINEC NMS (All versions < V1.0? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.