CVE-2026-41100 json
Microsoft 365 Copilot for Android Spoofing Vulnerability
published 2026-05-12 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-29686
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.
Patch / fix
- Microsoft Microsoft 365 Copilot for Android 16.0.19822.20190
- Microsoft Microsoft Excel for Android 16.0.19822.20190
- Microsoft Microsoft Loop for Android 16.0.19822.20190
- Microsoft Microsoft OneNote for Android 16.0.19822.20190
- Microsoft Microsoft PowerPoint for Android 16.0.19822.20190
- Microsoft Microsoft Word for Android 16.0.19822.20190
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.4 | 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 |
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
Affected products
- Microsoft Microsoft 365 Copilot for Android
- Microsoft Microsoft Excel for Android
- Microsoft Microsoft Loop for Android
- Microsoft Microsoft OneNote for Android
- Microsoft Microsoft PowerPoint for Android
- Microsoft Microsoft Word for Android
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-41100
vendor-advisory, patch
Sources
- CVE List CVE-2026-41100
- NVD CVE-2026-41100
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