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Microsoft to release emergency patch for IE XML flaw

Microsoft on Wednesday will release an emergency out-of-band patch for the XML handling flaw in Internet Explorer that has been the target of malware attacks for the last week or more. This is the second time in the last few months that the company has released a patch outside of its monthly scheduled update cycle. Microsoft issued a security bulletin about the vulnerability last week and later updated it to inform customers that all supported versions of IE are vulnerable to the attack, not just IE 7.

The patch will be rated critical, as you’d expect from an emergency fix, and Microsoft is planning to hold a webcast tomorrow at 1 p.m. PST to explain the vulnerability, the attacks and the fix. Microsoft also released an emergency patch for the MS08-067 RPC vulnerability in October. In that case, just as in the case of the IE XML flaw, Microsoft and other security companies had warned that there were targeted attacks being used against the vulnerability.

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