this post was submitted on 23 Jul 2025
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Google, Microsoft say Chinese hackers are exploiting SharePoint zero-day (techcrunch.com)
submitted 4 days ago by drmoose@lemmy.world to c/technology@lemmy.world
28 comments fedilink hide all child comments
 

Security researchers at Google and Microsoft say they have evidence that hackers backed by China are exploiting a zero-day bug in Microsoft SharePoint, as companies around the world scramble to patch the flaw.

The bug, known officially as CVE-2025-53770 and discovered last weekend, allows hackers to steal sensitive private keys from self-hosted versions of SharePoint, a software server widely used by companies and organizations to store and share internal documents. Once exploited, an attacker can use the bug to remotely plant malware and gain access to the files and data stored within, as well as gain access to other systems on the same network.

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[–] drmoose@lemmy.world 30 points 4 days ago* (last edited 4 days ago) (1 children)

The attack exploits SharePoint vulnerabilities originally disclosed at a Berlin hacking competition in May, where a Vietnamese cybersecurity researcher received a $100,000 bounty for discovering the flaws. Reuters reported that Microsoft was allegedly informed of the vulnerabilities in May but failed to fully address them in an initial July patch

And

Several cybersecurity experts compared the SharePoint campaign to the 2021 Microsoft Exchange server attacks that compromised US government systems. Former FBI Cyber Unit deputy director Cynthia Kaiser warned that hackers "already in their systems may lie dormant for extended periods before operationalizing"

Just shows in what a poor position US is now. Allies discovered it, reported it, feds didn't prepare for it and Chinese are in. Incredible incompetence except for US allies that despite US' isolationism still care.

Source

[–] adespoton@lemmy.ca 11 points 4 days ago (1 children)

Yeah; allies still care because of the US military industrial complex. Compromising the US still compromises a large chunk of the world, making things even worse for everyone than the current US administration can do on its own.

[–] Squizzy@lemmy.world 2 points 1 day ago

And the rest of the world are not petulant children ready and willing to remove any semblance of cooperation, appreciation or decency.