<p>Products that include the Siemens PROFINET-IO (PNIO) stack in versions prior V06.00 are potentially affected by a denial of service vulnerability when multiple legitimate diagnostic package requests are sent to the DCE-RPC interface.</p>
<p>Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.</p>
<p>Additionally, Siemens recommends other vendors of PROFINET devices to check if their products have incorporated a vulnerable version of the Siemens PNIO stack as part of the Siemens Development/Evaluation Kits.</p>
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