Critical Adobe Flash bug under active attack currently has no patch

Adobe is working on a patch for a newly-discovered vulnerability in Adobe Flash that is being actively exploited by hackers in targeted attacks. Ars Technica has the details:

The active zero-day exploit works against the most recent Flash version 21.0.0.242 and was detected earlier this month by researchers from antivirus provider Kaspersky Lab, according to a blog post published Tuesday by Costin Raiu, the director of the company’s global research and analysis team. It’s being carried out by “ScarCruft,” the name Kaspersky has given to a relatively new hacking group engaged in “advanced persistent threat” campaigns that target companies and organizations for high-value information and data.

Details on how to mitigate the threat can be found on Symantec’s website.

Adobe has published minimal information on its website, and a fix may arrive as early as tomorrow (Thursday 16 June).

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By which time you’ll hopefully also have had a chance to roll out the critical Patch Tuesday fixes Microsoft published yesterday.


Graham Cluley is an award-winning keynote speaker who has given presentations around the world about cybersecurity, hackers, and online privacy. A veteran of the computer security industry since the early 1990s, he wrote the first ever version of Dr Solomon's Anti-Virus Toolkit for Windows, makes regular media appearances, and is the co-host of the popular "Smashing Security" podcast. Follow him on Twitter, Mastodon, Threads, Bluesky, or drop him an email.

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