Microsoft has admitted that its XP operating system with Service Pack 2 is potentially vulnerable to a new denial of service threat.
Details of the threat are circulating on the internet and Microsoft says it is currently deciding whether to issue a security patch against the vulnerability.
Any patch would normally not be issued until 9 August at the earliest, as part of Microsoft’s monthly security update cycle.
Even if users turn on the firewall bundled with XP, a remote attacker can potentially take over XP-based machines using the reported flaw.
The vulnerability is connected to the Windows Remote Desktop feature in XP, which allows users to remotely control their PCs while away from their normal location.