---
id: CVE-2026-69559
title: >-
  Origin validation error in Microsoft Teams for Android allows an authorized
  attacker to disclose information over a network.
summary: >-
  Origin validation error in Microsoft Teams for Android allows an authorized
  attacker to disclose information over a network.
severity: medium
cvss: 5.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N'
cwe:
  - CWE-346
vendor: Microsoft
product: Microsoft Teams for Android
affected:
  - teams_for_android >= 1.0.0 < 1.0.0.2026142702
published: '2026-09-08'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T18:18:12.640'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69559'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69559'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T19:45:41.053894Z'
epss: 0.0032
epssPercentile: 0.25138
ingestedAt: '2026-09-08T19:08:49.615Z'
---

## Overview

Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.