Ukraine's Computer Emergency Response Team (CERT) says that Russian hackers are exploiting CVE-2026-21509, a recently patched vulnerability in multiple versions of Microsoft Office.
A hole in Microsoft Office is being exploited by bad actors, including Russian hackers targeting Ukraine's government.
Russia-linked hacking group Fancy Bear is exploiting a brand-new vulnerability in Microsoft Office, CERT-UA says ...
APT28's attacks use specially crafted Microsoft Rich Text Format (RTF) documents to kick off a multistage infection chain to deliver malicious payloads.
APT28 exploited a Microsoft Office flaw to deliver MiniDoor and Covenant Grunt malware in targeted attacks across Ukraine and Eastern Europe.
The Register on MSN
Russia-linked APT28 attackers already abusing new Microsoft Office zero-day
Ukraine’s CERT says the bug went from disclosure to active exploitation in days Russia-linked attackers are already ...
It's believed that, between June and November 10/December 2, 2025 (independent security experts and its hosting provider ...
The hosting provider's compromise allowed attackers to deliver malware through tainted software updates for six months.
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