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7.1
HIGH CVSS 3.1
CVE-2026-26133
M365 Copilot Information Disclosure Vulnerability
Overview
Description

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

Details
INFO

Published Date :

March 16, 2026, 2:18 p.m.

Last Modified :

April 7, 2026, 2:54 p.m.

Remotely Exploit :

No

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-26133 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft edge
2 Microsoft teams
3 Microsoft word
4 Microsoft outlook
5 Microsoft excel
6 Microsoft powerpoint
7 Microsoft onenote
8 Microsoft outlook_2016
9 Microsoft onenote_for_android
10 Microsoft 365_copilot
11 Microsoft 365_copilot_ios
12 Microsoft loop
13 Microsoft 365_copilot_android
14 Microsoft onenote_for_ios
15 Microsoft power_bi_ios
16 Microsoft power_bi_android
17 Microsoft power_bi
18 Microsoft powerbi
: Total Affected Vendor : 1 | Products : 18
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH f38d906d-7342-40ea-92c1-6c4a2c6478c8
CVSS 3.1 HIGH [email protected]
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-26133.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-26133 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-26133 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-26133 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-26133 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Reanalysis by [email protected]

    Apr. 07, 2026

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:microsoft:outlook:-:*:*:*:*:macos:*:* *cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19815.10000 *cpe:2.3:a:microsoft:edge:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 145.3800.99 *cpe:2.3:a:microsoft:excel:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:onenote:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19725.20142 *cpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:teams:*:*:*:*:*:android:*:* versions up to (excluding) 1.0.0.2026043102 *cpe:2.3:a:microsoft:word:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.107.2 *cpe:2.3:a:microsoft:edge:*:*:*:*:*:android:*:* versions up to (excluding) 145.3800.99 *cpe:2.3:a:microsoft:excel:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 *cpe:2.3:a:microsoft:loop:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106 *cpe:2.3:a:microsoft:outlook:*:*:*:*:*:android:*:* versions up to (excluding) 5.2605.0 *cpe:2.3:a:microsoft:outlook:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 5.2605.0 *cpe:2.3:a:microsoft:onenote:-:*:*:*:*:iphone_os:*:* *cpe:2.3:a:microsoft:powerbi:-:*:*:*:*:iphone_os:*:* *cpe:2.3:a:microsoft:power_bi:*:*:*:*:*:android:*:* versions up to (excluding) 2.2.260210.21290750 *cpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 *cpe:2.3:a:microsoft:teams:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 8.3.1 *cpe:2.3:a:microsoft:word:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 OR *cpe:2.3:a:microsoft:outlook:-:*:*:*:*:macos:*:* *cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19815.10000 *cpe:2.3:a:microsoft:edge:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 145.3800.99 *cpe:2.3:a:microsoft:excel:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:onenote:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19725.20142 *cpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:teams:*:*:*:*:*:android:*:* versions up to (excluding) 1.0.0.2026043102 *cpe:2.3:a:microsoft:word:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.107.2 *cpe:2.3:a:microsoft:edge:*:*:*:*:*:android:*:* versions up to (excluding) 145.3800.99 *cpe:2.3:a:microsoft:excel:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 *cpe:2.3:a:microsoft:loop:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106 *cpe:2.3:a:microsoft:outlook:*:*:*:*:*:android:*:* versions up to (excluding) 5.2605.0 *cpe:2.3:a:microsoft:outlook:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 5.2605.0 *cpe:2.3:a:microsoft:onenote:-:*:*:*:*:iphone_os:*:* *cpe:2.3:a:microsoft:power_bi:*:*:*:*:*:android:*:* versions up to (excluding) 2.2.260210.21290750 *cpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 *cpe:2.3:a:microsoft:teams:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 8.3.1 *cpe:2.3:a:microsoft:word:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 *cpe:2.3:a:microsoft:power_bi:-:*:*:*:*:iphone_os:*:*
  • Initial Analysis by [email protected]

    Apr. 07, 2026

    Action Type Old Value New Value
    Added CWE CWE-77
    Added CPE Configuration OR *cpe:2.3:a:microsoft:outlook:-:*:*:*:*:macos:*:* *cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19815.10000 *cpe:2.3:a:microsoft:edge:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 145.3800.99 *cpe:2.3:a:microsoft:excel:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:onenote:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19725.20142 *cpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:teams:*:*:*:*:*:android:*:* versions up to (excluding) 1.0.0.2026043102 *cpe:2.3:a:microsoft:word:*:*:*:*:*:android:*:* versions up to (excluding) 16.0.19822.20038 *cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.107.2 *cpe:2.3:a:microsoft:edge:*:*:*:*:*:android:*:* versions up to (excluding) 145.3800.99 *cpe:2.3:a:microsoft:excel:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 *cpe:2.3:a:microsoft:loop:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106 *cpe:2.3:a:microsoft:outlook:*:*:*:*:*:android:*:* versions up to (excluding) 5.2605.0 *cpe:2.3:a:microsoft:outlook:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 5.2605.0 *cpe:2.3:a:microsoft:onenote:-:*:*:*:*:iphone_os:*:* *cpe:2.3:a:microsoft:powerbi:-:*:*:*:*:iphone_os:*:* *cpe:2.3:a:microsoft:power_bi:*:*:*:*:*:android:*:* versions up to (excluding) 2.2.260210.21290750 *cpe:2.3:a:microsoft:powerpoint:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2 *cpe:2.3:a:microsoft:teams:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 8.3.1 *cpe:2.3:a:microsoft:word:*:*:*:*:*:iphone_os:*:* versions up to (excluding) 2.106.2
    Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Mar. 16, 2026

    Action Type Old Value New Value
    Added Description AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26133
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact