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Microsoft 365 Word Copilot security vulnerabilities
🗓️ 22 Jan 2026 00:00:00Reported by China National Vulnerability Database of Information SecurityType 
cnnvd🔗 www.cnnvd.org.cn👁 3 Views
| Reporter | Title | Published | Views | Family All 10 |
|---|---|---|---|---|
 | CVE-2026-21521 | 22 Jan 202622:47 | – | attackerkb |
 | CVE-2026-21521 | 13 Feb 202604:55 | – | circl |
 | CVE-2026-21521 | 22 Jan 202622:47 | – | cve |
 | CVE-2026-21521 Word Copilot Information Disclosure Vulnerability | 22 Jan 202622:47 | – | cvelist |
 | EUVD-2026-4498 | 23 Jan 202600:31 | – | euvd |
 | Word Copilot Information Disclosure Vulnerability | 22 Jan 202616:00 | – | mscve |
 | CVE-2026-21521 | 22 Jan 202623:15 | – | nvd |
 | PT-2026-4308 | 22 Jan 202600:00 | – | ptsecurity |
 | CVE-2026-21521 | 24 Jan 202603:17 | – | redhatcve |
 | CVE-2026-21521 Word Copilot Information Disclosure Vulnerability | 22 Jan 202622:47 | – | vulnrichment |
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28 May 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.4
EPSS0.00124
SSVC