The issue meant that people who gave their device to someone else could still view the feeds, even when ex-users had factory reset the Indoor Cam before passing it on.
Google - which bought Nest in 2014 before merging it with its own sart home division in July 2018 - has responded to the bug, and confirmed it has "rolled out" an instant fix.
A spokesperson told Wirecutter: "We were recently made aware of an issue affecting some Nest cameras connected to third-party partner services via Works with Nest.
"We've since rolled out a fix for this issue that will update automatically."
Meanwhile, a Google executive previously admitted there are issues that must be addressed as technology changes, and pointed to the way the world has adapted to the telephone as an example of how things may unfold as he called for "new legislation".
Speaking earlier this year, Scott Huffman - the company's vice president of engineering for Google Assistant - said: "If you think about Google Home or Alexa, these are really the first devices ever that aren't personal devices. They're really computing devices that live in a shared environment ...
"These things now live in this room with all of us, and we're all users. How does privacy work then? Honestly, I think it will also in the end probably take new legislation, as society figures out how these things fit in.
"You look at things like the telephone; that's been around for a long time. There's a bunch of laws about how you could use a telephone, and what you can do."