APT28 Exploits Office CVE 2026 21509
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#APT28 #UAC0001 #CVE202621509 #MicrosoftOffice #NationStateThreat #CyberEspionage #ThreatIntel #MalwareCampaign

Office Zero-Day Actively Exploited - CVE-2026-21509 Microsoft Office zero-day CVE-2026-21509 actively exploited. Every version from 2016 to 365 affected. Attackers bypass OLE protections via Shell.Explorer.1 COM object. Emergency patch available.

"Microsoft Office zero-day actively exploited" 🕵️ 🙄

(CVSS 7.8)

hackingpassion.com/office-zero-...

#cve202621509 #cybersec #cybersecurity #infosec #microsoft #office #microsoftoffice #ole

APT28 Exploits CVE-2026-21509

~Zscaler~
APT28 is actively exploiting CVE-2026-21509 via malicious RTF files to deploy backdoors against targets in Central and Eastern Europe.
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IOCs: CVE-2026-21509
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#APT28 #CVE202621509 #ThreatIntel

#microsoft365 #adminmicrosoft365 #office2016 #segurançadainformação #cve202621509 #atualizaçõesmicrosoft #sysadmin #ti #infraestruturadeti #gestãodeambientes #complianceti #segurançacorporativa… | Mau... 🚨 Atenção, Admins de Microsoft 365!   A Microsoft liberou uma versão atualizada do 𝗦𝗰𝗮𝗻 𝗖𝗮𝗯 𝗱𝗲 𝗷𝗮𝗻𝗲𝗶𝗿𝗼/𝟮𝟬𝟮𝟲 com novos metadados relacionados às atualizações do 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗢𝗳𝗳𝗶𝗰𝗲 𝟮𝟬𝟭𝟲 — incluindo proteç...

🚨 𝗦𝗲𝘂 𝗮𝗺𝗯𝗶𝗲𝗻𝘁𝗲 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗽𝗼𝗱𝗲 𝗲𝘀𝘁𝗮𝗿 “𝗮𝗰𝗵𝗮𝗻𝗱𝗼” 𝗾𝘂𝗲 𝗲𝘀𝘁á 𝗮𝘁𝘂𝗮𝗹𝗶𝘇𝗮𝗱𝗼… 𝗺𝗮𝘀 𝗻ã𝗼 𝗲𝘀𝘁á!

A Microsoft atualizou o 𝗦𝗰𝗮𝗻 𝗖𝗮𝗯 𝗱𝗲 𝗷𝗮𝗻/𝟮𝟬𝟮𝟲.

👉 Saiba mais aqui: www.linkedin.com/posts/mauric...

#Microsoft365 #AdminMicrosoft365 #Office2016 #SegurançaDaInformação #CVE202621509

MS Office RCE CVE-2026-21509

~Sophos~
A high-severity Microsoft Office vulnerability is being actively exploited in the wild to bypass OLE security mitigations.
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IOCs: CVE-2026-21509
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#CVE202621509 #MicrosoftOffice #ThreatIntel

Microsoft Issues Emergency Patch for Actively Exploited Office Zero-Day Vulnerability

Microsoft just patched a critical Office zero-day (CVE-2026-21509) being actively exploited—check if your version (2016, 2019, 365, LTSC) is vulnerable and get the urgent fix steps here.
biggo.com/news/202601271624_Micros...

#MicrosoftOffice #CVE202621509