The zero-day was first noticed in December 2015 but demonstrated by Yunusov yesterday at the Nullcon conference in Goa.
Yunusov proceeded to reveal flaws in eight 3G and 4G modems.
All the modem models investigated had critical vulnerabilities leading to complete system compromise, Yunusov toldThe Register.
Virtually all the vulnerabilities could be exploited remotely.
Out of eight modems, Yunusov tested, four modems could be hacked using cross-site scripting vulnerabilities.
These vulnerabilities could be used to remotely infect the victims PC and intercept HTTP and SMS traffic.
source: www.techworm.net