The vulnerability of Microsoft Copilot Studio, a graphical tool for creating and supporting artificial intelligence, relates to insufficient data cleaning at the management level. This vulnerability allows an attacker to disclose protected information.
🗓️ 27 Jan 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 12 Views
| Reporter | Title | Published | Views | Family All 13 |
|---|---|---|---|---|
 | CVE-2026-21520 | 22 Jan 202622:47 | – | attackerkb |
 | CVE-2026-21520 | 23 Jan 202600:02 | – | circl |
 | Microsoft Copilot Studio command injection vulnerability | 22 Jan 202600:00 | – | cnnvd |
 | CVE-2026-21520 | 22 Jan 202622:47 | – | cve |
 | CVE-2026-21520 Copilot Studio Information Disclosure Vulnerability | 22 Jan 202622:47 | – | cvelist |
 | EUVD-2026-4504 | 23 Jan 202600:31 | – | euvd |
 | Copilot Studio Information Disclosure Vulnerability | 22 Jan 202616:00 | – | mscve |
 | CVE-2026-21520 | 22 Jan 202623:15 | – | nvd |
 | PT-2026-4307 | 22 Jan 202600:00 | – | ptsecurity |
 | CVE-2026-21520: Improper Neutralization of Special Elements used in a Command | 22 Jan 202600:00 | – | rapid7 |
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27 Jan 2026 00:00Current
6.1Medium risk
Vulners AI Score6.1
CVSS 37.5
CVSS 27.8
EPSS0.01479