CVE-2026-26133: M365 Copilot Information Disclosure Vulnerability
Noroxi assessment
Priority: Monitor (action score 28/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.49% (FIRST EPSS).
- Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- Fixed version: Microsoft 365 Copilot for Android 16.0.19815.10000; Microsoft 365 Copilot for iOS 2.107.2; Microsoft Edge for Android 145.3800.99.
Low priority for now. Upgrade to Microsoft 365 Copilot for Android 16.0.19815.10000; Microsoft 365 Copilot for iOS 2.107.2; Microsoft Edge for Android 145.3800.99 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.
- Published
- Mar 16, 2026
- Updated
- Jun 19, 2026
- EPSS
- 0.4% · 42th percentile
- CWE
- CWE-77
Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · microsoft
- 7.1
- NVD has not scored this yet; the score shown is the CNA’s.
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
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| microsoft | 365 copilot | cpe:2.3:a:microsoft:365_copilot |
| microsoft | edge | cpe:2.3:a:microsoft:edge |
| microsoft | excel | cpe:2.3:a:microsoft:excel |
| microsoft | loop | cpe:2.3:a:microsoft:loop |
| microsoft | onenote | cpe:2.3:a:microsoft:onenote |
| microsoft | outlook | cpe:2.3:a:microsoft:outlook |
| microsoft | power bi | cpe:2.3:a:microsoft:power_bi |
| microsoft | powerpoint | cpe:2.3:a:microsoft:powerpoint |
| microsoft | teams | cpe:2.3:a:microsoft:teams |
| microsoft | word | cpe:2.3:a:microsoft:word |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft 365 copilotbefore 2.107.2
- microsoft 365 copilotbefore 16.0.19815.10000
- microsoft edgebefore 145.3800.99
- microsoft excelbefore 2.106.2
- microsoft excelbefore 16.0.19822.20038
- microsoft loopbefore 2.106
- microsoft onenotebefore 16.0.19725.20142
- microsoft onenoteall versions
- microsoft outlookbefore 5.2605.0
- microsoft outlookall versions
- microsoft power bibefore 2.2.260210.21290750
- microsoft power biall versions
- microsoft powerpointbefore 2.106.2
- microsoft powerpointbefore 16.0.19822.20038
- microsoft teamsbefore 1.0.0.2026043102
- microsoft teamsbefore 8.3.1
- microsoft wordbefore 2.106.2
- microsoft wordbefore 16.0.19822.20038
Versions reported by the vendor
Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.
Microsoft Microsoft 365 Copilot for Android
- 1.0 and later · before 16.0.19815.10000affected
Microsoft Microsoft 365 Copilot for iOS
- 1.0 and later · before 2.107.2affected
Microsoft Microsoft Edge for Android
- 1.0.0 and later · before 145.3800.99affected
Microsoft Microsoft Edge for iOS
- 1.0.0.0 and later · before 145.3800.99affected
Microsoft Microsoft Excel for Android
- 16.0.0.0 and later · before 16.0.19822.20038affected
Microsoft Microsoft Excel for iOS
- 1.0 and later · before 2.106.26020617affected
Microsoft Microsoft Loop for iOS
- 2.0.0 and later · before 2.106.26020617affected
Microsoft Microsoft OneNote
- 1.0.0 and later · before 2.106.26020617affected
Microsoft Microsoft OneNote for Android
- 16.0.1 and later · before 16.0.19725.20142affected
Microsoft Microsoft Outlook for Android
- 1.0 and later · before 5.2605affected
Microsoft Microsoft Outlook for iOS
- 1.0.0 and later · before 5.2605affected
Microsoft Microsoft Outlook for Mac
- 1.0.0 and later · before 5.2605affected
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-53766GDI+ Remote Code Execution Vulnerability42Plan
- CVE-2025-60724GDI+ Remote Code Execution Vulnerability41Plan
- CVE-2026-50517Microsoft M365 Copilot Remote Code Execution Vulnerability40Plan
Published before and after this one in the same product
- ← EarlierCVE-2026-25180Mar 10, 2026 · Windows Graphics Component Information Disclosure Vulnerability22Monitor
- ← EarlierCVE-2026-26134Mar 10, 2026 · Microsoft Office Elevation of Privilege Vulnerability31Monitor
- Later →CVE-2026-24299Mar 19, 2026 · M365 Copilot Information Disclosure Vulnerability21Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Microsoft 365 Copilot for Android | 16.0.19815.10000 · Release Notes | Microsoft (MSRC) |
| Microsoft 365 Copilot for iOS | 2.107.2 · Release Notes | Microsoft (MSRC) |
| Microsoft Edge for Android | 145.3800.99 · Release Notes | Microsoft (MSRC) |
| Microsoft Edge for iOS | 145.3800.99 · Release Notes | Microsoft (MSRC) |
| Microsoft Excel for Android | 16.0.19822.20038 · Release Notes | Microsoft (MSRC) |
| Microsoft Excel for iOS | 2.106.26020617 · Release Notes | Microsoft (MSRC) |
| Microsoft Loop for iOS | 2.106.26020617 · Release Notes | Microsoft (MSRC) |
| Microsoft OneNote for Android | 16.0.19725.20142 · Release Notes | Microsoft (MSRC) |
| Microsoft OneNote for iOS | 2.106.26020617 · Release Notes | Microsoft (MSRC) |
| Microsoft Outlook for Android | 5.2605 · Release Notes | Microsoft (MSRC) |
| Microsoft Outlook for iOS | 5.2605 · Release Notes | Microsoft (MSRC) |
| Microsoft Outlook for Mac | 5.2605 · Release Notes | Microsoft (MSRC) |
| Microsoft PowerBI for Android | 2.2.260210.21290750 · Release Note | Microsoft (MSRC) |
| Microsoft PowerBI for iOS | 1.2.260302.2193910 · Release Note | Microsoft (MSRC) |
| Microsoft PowerPoint for Android | 16.0.19822.20038 · Release Notes | Microsoft (MSRC) |
| Microsoft PowerPoint for iOS | 2.106.26020617 · Release Note | Microsoft (MSRC) |
| Microsoft Teams for Android | 1.0.0.2026043102 · Release Notes | Microsoft (MSRC) |
| Microsoft Teams for iOS | 8.3.1 · Release Notes | Microsoft (MSRC) |
| Microsoft Word for Android | 16.0.19822.20038 · Release Notes | Microsoft (MSRC) |
| Microsoft Word for iOS | 2.106.26020617 · Release Notes | Microsoft (MSRC) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-48561120 days apartMicrosoft Edge Copilot Remote Code Execution Vulnerability38Monitor
- CVE-2026-4109067 days apartMicrosoft Copilot Tampering Vulnerability37Monitor
- CVE-2026-85885185 days apartMicrosoft 365 Copilot Elevation of Privilege Vulnerability35Monitor
- CVE-2026-4282767 days apartM365 Copilot Information Disclosure Vulnerability30Monitor
- CVE-2026-4289595 days apartMicrosoft Copilot Tampering Vulnerability30Monitor
- CVE-2026-242993 days apartM365 Copilot Information Disclosure Vulnerability21Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- LDAP InjectionCAPEC-136likelihood: High · High
- Command DelimitersCAPEC-15likelihood: High · High
- IMAP/SMTP Command InjectionCAPEC-183Medium
- Command InjectionCAPEC-248likelihood: Medium · High
- Manipulating Writeable Terminal DevicesCAPEC-40likelihood: High · Very High
- Exploiting Multiple Input Interpretation LayersCAPEC-43likelihood: Medium · High
- Manipulating Writeable Configuration FilesCAPEC-75likelihood: High · Very High
- Manipulating Web Input to File System CallsCAPEC-76likelihood: High · Very High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.