Cisco is warning customers that a flaw in one of its computer telephony products could be exploited to allow a denial of service (DoS) attack.
The vulnerability in its CallManager software can result in a memory leak in the computer telephony framework causing the server to crash, which could be used by a hacker to start a DoS attack.
The bug is thought only to affect versions 3.0 and 3.1.
Cisco said in a statement that the fault is most commonly seen when CallManager systems are integrated with a directory such as Active Directory or Netscape.
The most common cause is when the CTI framework is not configured with a valid password in the directory.
Why does Facebook store "my entire call history with my partner's mum", asks developer who requested his Facebook data
Facebook database included text-message metadata - despite not using Facebook Messenger for SMS
Before Ocado could start selling the technology it had developed to other retailers, it had to tear down and rebuild its own monolithic architecture
Successful attack could result in harm to patients and financial loss, warns NHS governing body
Guccifer 2.0 claimed to be a lone Romanian hacker - until a schoolboy error gave him, her or them away