CVE-2026-69559: CWE-346: Origin Validation Error in Microsoft Microsoft Teams for Android
Description
CVE-2026-69559 is an origin validation error vulnerability in Microsoft Teams for Android that allows an authorized attacker to disclose information over a network. The vulnerability has a medium severity with a CVSS score of 5.8. An official fix is available from Microsoft.
CVSS v3.1
Score 5.8medium
Affected software
Microsoft
Microsoft Teams for Android
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft Teams for Android (versions >=1.0.0 <1.0.0.2026142702 and =1.0.0) involves improper origin validation (CWE-346), which can be exploited by an authorized attacker to disclose sensitive information over a network. The CVSS 3.1 vector indicates network attack vector, high attack complexity, low privileges required, user interaction required, and confidentiality impact is high while integrity and availability are unaffected. Microsoft has published an official fix for this issue.
Potential Impact
An authorized attacker can exploit this origin validation error to disclose sensitive information over the network, potentially compromising confidentiality. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the update to Microsoft Teams for Android as provided in the Microsoft Security Response Center advisory to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:15:56.835Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69559","vendor":"Microsoft"}]
Threat ID: 6aa0450dacd9273b49fa8c11
Added to database: 09/08/2026, 17:25:33 UTC
Last enriched: 10/16/2026, 20:41:22 UTC
Last updated: 10/24/2026, 03:05:10 UTC
Views: 50
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