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CVE-2026-42835: Microsoft Teams for Android Information Disclosure Vulnerability

highCVSS 8.1CVE-2026-42835
Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.

CSIRTS triage

vendor: Microsoftproduct: Teams for AndroidInformation disclosure
What
Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.
Who is affected
Authorized users of Microsoft Teams for Android.
Urgency
Remediation is urgent due to the high severity and potential for information disclosure.
Action
Update Microsoft Teams for Android to the latest version.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.1
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42835

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-42835coverage & exploitation statusNVD · CVE.org

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