APT28 Hackers Exploiting Microsoft Office 0

Cybersecuritynews •Tushar Subhra Dutta • February 3, 2026

APT28, the Russia-linked advanced persistent threat group, has launched a sophisticated campaign targeting Central and Eastern Europe using a zero-day vulnerability in Microsoft Office. The threat actors leveraged specially crafted Microsoft Rich Text Format (RTF) files to exploit the vulnerability and deliver malicious backdoors through a multi-stage infection chain. The campaign, tracked as Operation Neusploit, […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Cyberattacks Target Ukraine and EU via Microsoft Office Vulnerability CERT-UA has reported a new wave of cyberattacks targeting Ukrainian government agencies and EU organizations, exploiting the Microsoft Office vulnerability CVE-2026-21509. Attackers are using malicious emails disguised as communications from the Ukrainian Hydrometeorological Center to gain access to victims' systems. 59 sources 50

Extracted Entities

APT28 Hackers Exploiting Microsoft Office 0

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Extracted Entities

APT Groups (1)

Attack Types (2)

Campaigns (1)

Platforms (2)