CVE-2020-15791
Last modified
CVE-2020-15791 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. EPSS estimates a 0.71% chance of exploitation in the next 30 days.
Description
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions), SINUMERIK 840D sl (All versions). The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Simatic S7-300 Cpu 312 Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 314 Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 315-2 Dp Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 315-2 Pn Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 317-2 Pn Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 317-2 Dp Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 315f-2 Dp Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 315f-2 Pn Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 317f-2 Pn Firmware | All versions |
| Siemens | Simatic S7-300 Cpu 317f-2 Dp Firmware | All versions |
| Siemens | Simatic S7-400 Cpu 412 Firmware | All versions |
| Siemens | Simatic S7-400 Cpu 414 Firmware | All versions |
| Siemens | Simatic S7-400 Cpu 416 Firmware | All versions |
| Siemens | Simatic S7-400 Cpu 417 Firmware | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Scan your code nowSource: NVD / NIST