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The development teams have been hard at work to integrate and test the patches for our products which are required to address the long list of vulnerabilities in the WPA/WPA2 protocol.
Sophos UTM 9.5 SR2
Sophos UTM 9.4 SR3
October 20, 2017 (9.505 released - also addresses RED 15w)
November 6, 2017 (9.415)
As always, software release dates can be subject to change but KRACK update releases will be updated in the following KBA: Advisory Sophos Wireless affected by WPA and WPA2 vulnerabilities with key reinstallation attacks (KRACKs)