CVE-2026-41100

Published May 12, 2026

Last updated 20 days ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-41100 describes an improper access control vulnerability found in Microsoft 365 Copilot for Android. This flaw allows an authorized attacker to perform local spoofing. The vulnerability is associated with a development flag that was inadvertently left active in the production code of several Microsoft 365 Android applications. This oversight could enable an unauthorized application on the same device to access Microsoft account tokens, potentially leading to spoofing.

Description
Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.
Source
secure@microsoft.com
NVD status
Analyzed
Products
365_copilot

Risk scores

CVSS 3.1

Type
Primary
Base score
4.4
Impact score
2.5
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Severity
MEDIUM

Weaknesses

secure@microsoft.com
CWE-284
nvd@nist.gov
NVD-CWE-Other

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.