Cisco is under pressure from investors to fix a software vulnerability affecting more than a billion of its corporate network switches, according to a report by the investment bank RBS.
“The software vulnerability affects Cisco switches, switches that are sold to companies and are used for customer data,” RBS wrote in a note to clients.
The firm is due to report its results on Tuesday.
Cisco was already under pressure last week after reports emerged that more than 1 million of its switch sets had been infected with a malicious software bug that could cause data loss and network outages.
In a blog post last week, Cisco said that a fix for the bug had been released and that it was not aware of any other instances of software bugs impacting Cisco switches.
However, RBS warned that the Cisco bug could potentially affect Cisco customers in the United States, Canada and Europe.
It added that Cisco had been alerted of more than 200 other software bugs affecting millions of its switches in the past year.
This is the second time this month that Cisco has been targeted by cybercriminals.
Last month, hackers released an update to a malicious code known as “BlackHole” that was also installed on Cisco routers.
The company said that this software update was used by hackers to steal credentials and other data from more than 50 million Cisco customers.