Description
A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions). Affected devices do not properly handle multiple incoming Profinet packets received in rapid succession.
An unauthenticated remote attacker can exploit this flaw by sending multiple packets in a very short time frame, which leads to a crash of the dcpd process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | SCALANCE LPE9403 | — | — |
Advisories 3
- ICSA-25-135-18 Siemens SCALANCE LPE9403 CISA ICS & IT advisories · Sep 15, 2026
- NCSC-2026-0346 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Sep 8, 2026
- SSA-327438 SSA-327438: Multiple Vulnerabilities in SCALANCE LPE9403 Siemens ProductCERT · Sep 8, 2026