A set of new vulnerabilities known as “FragAttacks” has been announced and these vulnerabilities affect WiFi communications and implementations. Broadly speaking, there are a total of 12 vulnerabilities, and three of them affect the WiFi design standard itself whereas the others affect specific implementations. Although CVSS scoring is not available yet as of this writing, it is likely the design flaws are the most serious and will require patches across nearly every WiFi implementation. The other vulnerabilities may also impact WiFi products, but these will be more limited in nature. The original source of information on FragAttacks can be found here: https://www.fragattacks.com/
You can read Extreme Networks full Vulnerability Notice here: https://extremeportal.force.com/ExtrArticleDetail?an=000095779