CVE-2026-26133
M365 Copilot Information Disclosure Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Timeline
ID reserved
By microsoft
- 30 days later
· 30 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High7.1 | 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 |
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.45% · top 61% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
Microsoft · Microsoft 365 Copilot for Android
- affected 1.0 – < 16.0.19815.10000
Microsoft · Microsoft 365 Copilot for iOS
- affected 1.0 – < 2.107.2
Microsoft · Microsoft Edge for Android
- affected 1.0.0 – < 145.3800.99
Microsoft · Microsoft Edge for iOS
- affected 1.0.0.0 – < 145.3800.99
Microsoft · Microsoft Excel for Android
- affected 16.0.0.0 – < 16.0.19822.20038
Microsoft · Microsoft Excel for iOS
- affected 1.0 – < 2.106.26020617
Microsoft · Microsoft Loop for iOS
- affected 2.0.0 – < 2.106.26020617
- affected 1.0.0 – < 2.106.26020617
Microsoft · Microsoft OneNote for Android
- affected 16.0.1 – < 16.0.19725.20142
Microsoft · Microsoft Outlook for Android
- affected 1.0 – < 5.2605
Microsoft · Microsoft Outlook for iOS
- affected 1.0.0 – < 5.2605
Microsoft · Microsoft Outlook for Mac
- affected 1.0.0 – < 5.2605
Microsoft · Microsoft PowerBI for Android
- affected 2.0.0 – < 2.2.260210.21290750
Microsoft · Microsoft PowerBI for iOS
- affected 1.0.0 – < 1.2.260302.2193910
Microsoft · Microsoft PowerPoint for Android
- affected 16.0.0.0 – < 16.0.19822.20038
Microsoft · Microsoft PowerPoint for iOS
- affected 1.0 – < 2.106.26020617
Microsoft · Microsoft Teams for Android
- affected 1.0.0 – < 1.0.0.2026043102
Microsoft · Microsoft Teams for iOS
- affected 2.0.0 – < 8.3.1
Microsoft · Microsoft Word for Android
- affected 16.0.0.0 – < 16.0.19822.20038
Microsoft · Microsoft Word for iOS
- affected 2.0.0 – < 2.106.26020617
References (1)
- M365 Copilot Information Disclosure Vulnerability (opens in a new tab)vendor-advisorypatch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-26133)Record last updated .