Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C/CR:H/IR:L/AR:L
EPSS Score
0.09%
25.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| microsoft | copilot_studio | - |
| Microsoft | Microsoft Copilot Studio | - |
Timeline
- Jan 13, 2026 CVE Published
- Jan 23, 2026 EPSS Score
- Jan 23, 2026 PoC Published
- Jan 25, 2026 EPSS Score
- Jan 27, 2026 EPSS Score
- Jan 29, 2026 EPSS Score
- Jan 31, 2026 EPSS Score
- Feb 3, 2026 EPSS Score
- Feb 5, 2026 EPSS Score
- Feb 7, 2026 EPSS Score
- Feb 9, 2026 EPSS Score
- Feb 11, 2026 EPSS Score
References
- Copilot Studio Information Disclosure Vulnerability vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-21520 advisory