Summary
Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Unlikely. Customer action: Required.
Details
What type of information could be disclosed by this vulnerability?
This vulnerability could expose a sign-in access token for a user’s work account. If disclosed, that token could allow access to data and services that the user is authorized to use, potentially including sensitive organizational information.
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires that the target system be set up in a specific manner and the attacker to have knowledge of that setup.
Security updates
1.0.0.2026142702 — https://play.google.com/store/apps/details?id=com.microsoft.teams
Vulnerabilities 1
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Medium 5.8
Microsoft Teams for Android Information Disclosure Vulnerability
Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.
Revision history
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#2
Corrected fix build number. Informational change only.
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#1
Information published.
References
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CVE-2026-69559 Microsoft Teams for Android Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69559
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss