CVE-2026-26133Network attack vector

Information disclosure via AI command injection

Published Mar 13, 2026 · Updated Mar 13, 2026

AI command injection in Microsoft 365 Copilot clients allows remote attackers to disclose information through attacker-supplied content. Microsoft identifies the flaw only as AI command injection and has not published the affected Copilot processing locus or the operation that treats untrusted content as commands. Exploitation requires user interaction but no prior privileges; disclosed impacts are information exposure and limited integrity loss, with no availability impact.

CVSS severity7.1
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

AI command injection in Microsoft 365 Copilot clients allows remote attackers to disclose information through attacker-supplied content. Microsoft identifies the flaw only as AI command injection and has not published the affected Copilot processing locus or the operation that treats untrusted content as commands. Exploitation requires user interaction but no prior privileges; disclosed impacts are information exposure and limited integrity loss, with no availability impact.

The record

CVE
CVE-2026-26133
Published
Mar 13, 2026
Updated
Mar 13, 2026
Vendor
Microsoft
Product
Microsoft PowerPoint for Android
Classifications
CWE-77
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.0.0.0 <16.0.19822.20038

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft PowerPoint for Androidversion=16.0.0.0 <16.0.19822.20038
Microsoft · Microsoft Outlook for iOSversion=1.0.0 <5.2605
Microsoft · Microsoft PowerBI for iOSversion=1.0.0 <1.2.260302.2193910
Microsoft · Microsoft Excel for iOSversion=1.0 <2.106.26020617
Microsoft · Microsoft OneNoteversion=1.0.0 <2.106.26020617
Microsoft · Microsoft Loop for iOSversion=2.0.0 <2.106.26020617
Microsoft · Microsoft Outlook for Androidversion=1.0 <5.2605
Microsoft · Microsoft 365 Copilot app for Androidversion=1.0 <16.0.19815.10000
Microsoft · Microsoft Teams for Androidversion=1.0.0 <1.0.0.2026043102
Microsoft · Microsoft 365 Copilot app for iOSversion=1.0 <2.107.2
Microsoft · Microsoft OneNote for Androidversion=16.0.1 <16.0.19725.20142
Microsoft · Microsoft PowerPoint for iOSversion=1.0 <2.106.26020617
Microsoft · Microsoft Outlook for Macversion=1.0.0 <5.2605
Microsoft · Microsoft Edge for Androidversion=1.0.0 <145.3800.99
Microsoft · Microsoft Excel for Androidversion=16.0.0.0 <16.0.19822.20038
Microsoft · Microsoft Word for Androidversion=16.0.0.0 <16.0.19822.20038
Microsoft · Microsoft PowerBI for Androidversion=2.0.0 <2.2.260210.21290750
Microsoft · Microsoft Teams for iOSversion=2.0.0 <8.3.1
Microsoft · Microsoft Word for iOSversion=2.0.0 <2.106.26020617
Microsoft · Microsoft Edge for iOSversion=1.0.0.0 <145.3800.99

Published CVSS scores

7.1Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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