"The hackers believed responsible for breaking into computers at the Democratic National Committee have exploited previously undisclosed flaws in Microsoft Corp.’s Windows operating system and Adobe Systems Inc.’s Flash software, Microsoft said Tuesday.Microsoft Says Russian Hackers Exploited Flaw in Windows - WSJ
It is unclear if those hackers, reportedly tied to Russia, used the newly disclosed vulnerabilities to hack into the DNC.
Microsoft Tuesday criticized Alphabet Inc’s Google for publicly identifying the Windows flaw on Monday, before Microsoft had had a chance to issue a patch."
Wednesday, November 02, 2016
Microsoft Says Russian Hackers Exploited Flaw in Windows - WSJ
Also see Google Just Warned of an 'Actively Exploited' Microsoft Windows Bug (Fortune)