CVE-2026-85114A vulnerability has been identified in .NET Client Library for SIMATIC S7 Webserver API (All versions < V3.3.61).
Updated under an hour ago ()
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It affects Siemens .NET Client Library for SIMATIC S7 Webserver API. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.44%, higher than 37% of scored CVEs.
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A vulnerability has been identified in .NET Client Library for SIMATIC S7 Webserver API (All versions < V3.3.61). Affected applications do not properly validate filenames received from remote servers during ticket downloads. This could allow an attacker who can manipulate the ticket response to write arbitrary files outside the intended download directory and, when overwriting is enabled, replace existing files accessible to the application.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.44% (percentile 37)
- Assigned by
- siemens
- NVD analysis
- Deferred
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
Siemens .NET Client Library for SIMATIC S7 Webserver API siemens:net_client_library_for_simatic_s7_webserver_api (from the name) | before V3.3.61 | CNA record |
References
- https://cert-portal.siemens.com/productcert/html/ssa-390352.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.