Microsoft warns wormable Windows bug could lead to another WannaCry

Microsoft is warning that the Internet could see another exploit with the magnitude of the WannaCry attack that shut down computers all over the world two years ago unless people patch a high-severity vulnerability. The software maker took the unusual step of backporting the just-released patch for Windows 2003 and XP, which haven’t been supported in four and five years, respectively.

“This vulnerability is pre-authentication and requires no user interaction,” Simon Pope, director of incident response at the Microsoft Security Response Center, wrote in a published post that coincided with the company’s May Update Tuesday release. “In other words, the vulnerability is ‘wormable,’ meaning that any future malware that exploits this vulnerability could propagate from vulnerable computer to vulnerable computer in a similar way as the WannaCry malware spread across the globe in 2017. While we have observed no exploitation of this vulnerability, it is highly likely that malicious actors will write an exploit for this vulnerability and incorporate it into their malware.”

Read more from Ars Technica

Microsoft is warning WannaCry

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