Cisco warns of 'highly critical' SIP flaw

The flaw in Cisco's IOS operating system could let a hacker remotely execute code or launch a denial-of-service attack.

Cisco Systems has issued a range of security advisories giving details of 11 vulnerabilities in IOS, the operating system on which many of its products run.

One of the vulnerabilities, described as "highly critical," could lead to a hacker compromising the affected system or launching a denial-of-service attack against it. The advisories, issued Wednesday, are part of Cisco's twice-yearly schedule of security updates for IOS.

The highly critical vulnerability affects IOS version 12 devices running SIP, a protocol used by many businesses to set up and tear down voice and video calls. IOS version 12 is widely deployed.

Read more of "'Highly critical' flaw identified in Cisco SIP systems" at ZDNet UK.

Tags:
Security
Cisco
About the author
 

Join the discussion

Conversation powered by Livefyre

Show Comments Hide Comments
Latest Galleries from CNET
Tech industry's high-flying 2014
Uber's tumultuous ups and downs in 2014 (pictures)
The best and worst quotes of 2014 (pictures)
A roomy range from LG (pictures)
This plain GE range has all of the essentials (pictures)
Sony's 'Interview' heard 'round the world (pictures)