Status: UPDATED | Advisory ID: CVE-2026-22924
| CVE | CVE-2026-22924 |
| CVSS Score / Version | 9.1 (Critical) / CVSS v3.1 |
| Updated | 2026-06-29 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is high; availability impact is high. |
| Affected products | Siemens SIMATIC CN 4100 and Siemens simatic_cn_4100_firmware |
| Classified as | CWE-306 (Missing Authentication for Critical Function) |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Siemens | SIMATIC CN 4100 | ||
| Siemens | simatic_cn_4100_firmware |
| Subsystems | General OT |
| Sectors | Multiple |
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions.
This could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity. (NVD)
Monitor Siemens's web page for any future patch releases. See vendor advisory link below.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-22924 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-22924 |
| Vendor advisory | https://cert-portal.siemens.com/productcert/html/ssa-032379.html |