Affected: Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller, Siemens Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200, Siemens Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P, Siemens PROFINET Driver for Controller, Siemens RUGGEDCOM RM1224 family, Siemens SCALANCE M804PB, Siemens SCALANCE M812-1 ADSL-Router, Siemens SCALANCE M816-1 ADSL-Router, Siemens SCALANCE M826-2 SHDSL-Router, Siemens SCALANCE M874-2 and 159 more

Profinet-IO (PNIO) stack versions prior V06.00 do not properly limit internal resource allocation when multiple legitimate diagnostic package requests are sent to the DCE-RPC interface. This could lead to a denial of service condition due to lack of memory for devices that include a vulnerable version of the stack.

The security vulnerability could be exploited by an attacker with network access to an affected device. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise the availability of the device.