Hackers Exploiting Microsoft Office 0

Cybersecuritynews •Abinaya • February 2, 2026

The Russia-linked threat group UAC-0001, also known as APT28, has been actively exploiting a critical zero-day vulnerability in Microsoft Office. The group is using this flaw to deploy sophisticated malware against Ukrainian government entities and European Union organizations. The vulnerability, identified as CVE-2026-21509, was disclosed by Microsoft on January 26, 2026, with warnings active […]

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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

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Hackers Exploiting Microsoft Office 0

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Extracted Entities

APT Groups (2)

Attack Types (2)

CVEs (1)

Industries (1)

Platforms (1)