Vulnerability · Published May 12, 2026 · Assigned by microsoft
CVE-2026-41100Microsoft 365 Copilot for Android Spoofing Vulnerability
Medium 4.4
In plain English
A medium-severity improper access control in Microsoft 365 Copilot for Android from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Severity (CVSS 3.1)4.4Medium
Exploit odds (30 days)0.2%top 83.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Copilot for Android | 1.0 – before 16.0.19822.20190 |
| Microsoft | Microsoft Excel for Android | 16.0.0.0 – before 16.0.19822.20190 |
| Microsoft | Microsoft Loop for Android | 1.0.0 – before 16.0.19822.20190 |
| Microsoft | Microsoft OneNote for Android | 16.0.1 – before 16.0.19822.20190 |
| Microsoft | Microsoft PowerPoint for Android | 16.0.0.0 – before 16.0.19822.20190 |
| Microsoft | Microsoft Word for Android | 16.0.0.0 – before 16.0.19822.20190 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
References
- Microsoft 365 Copilot for Android Spoofing Vulnerability vendor-advisory, patch