Vulnerability · Published Nov 11, 2025 · Assigned by siemens
CVE-2025-40815
High 7.2
In plain English
A high-severity buffer overflow in LOGO! 12/24RCE from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Official description
A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA2) (All versions < V1.84.05), LOGO! 12/24RCEo (6ED1052-2MD08-0BA2) (All versions < V1.84.05), LOGO! 230RCE (6ED1052-1FB08-0BA2) (All versions < V1.84.05), LOGO! 230RCEo (6ED1052-2FB08-0BA2) (All versions < V1.84.05), LOGO! 24CE (6ED1052-1CC08-0BA2) (All versions < V1.84.05), LOGO! 24CEo (6ED1052-2CC08-0BA2) (All versions < V1.84.05), LOGO! 24RCE (6ED1052-1HB08-0BA2) (All versions < V1.84.05), LOGO! 24RCEo (6ED1052-2HB08-0BA2) (All versions < V1.84.05), SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA2) (All versions < V1.84.05), SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA2) (All versions < V1.84.05), SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA2) (All versions < V1.84.05), SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA2) (All versions < V1.84.05), SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA2) (All versions < V1.84.05), SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA2) (All versions < V1.84.05), SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA2) (All versions < V1.84.05), SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA2) (All versions < V1.84.05). Affected devices do not properly validate the structure of TCP packets in several methods. This could allow an attacker to cause buffer overflows, get control over the instruction counter and run custom code.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | LOGO! 12/24RCE | 0 – before V1.84.05 |
| Siemens | LOGO! 12/24RCEo | 0 – before V1.84.05 |
| Siemens | LOGO! 230RCE | 0 – before V1.84.05 |
| Siemens | LOGO! 230RCEo | 0 – before V1.84.05 |
| Siemens | LOGO! 24CE | 0 – before V1.84.05 |
| Siemens | LOGO! 24CEo | 0 – before V1.84.05 |
| Siemens | LOGO! 24RCE | 0 – before V1.84.05 |
| Siemens | LOGO! 24RCEo | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 12/24RCE | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 12/24RCEo | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 230RCE | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 230RCEo | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 24CE | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 24CEo | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 24RCE | 0 – before V1.84.05 |
| Siemens | SIPLUS LOGO! 24RCEo | 0 – before V1.84.05 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H