CISA has published an advisory on a resource exhaustion vulnerability in Siemens SIMATIC S7-1500 CPU family. Multiple products and versions of these products are affected. This vulnerability could allow a remote attacker to conduct denial-of-service attacks. Siemens has released updates for several affected products, is working on updates for the remaining affected products, and recommends specific countermeasures until fixes are available. CISA also recommends a series of measures to mitigate the vulnerabilities. Read the advisory at CISA.