CVE-2026-42835Network attack vector

Authenticated information disclosure via downstream injection

Published Jun 9, 2026 · Updated Jun 9, 2026

Injection in Microsoft Teams for Android before 1.0.76.2026111302 allows remote authenticated users to disclose information over a network. Microsoft identifies improper neutralization of special elements passed to a downstream component, but has not disclosed the affected locus, data path, or crafted input format. Exploitation requires an authenticated Teams account and no user interaction; public records do not identify the information exposed.

CVSS severity8.1
High
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Injection in Microsoft Teams for Android before 1.0.76.2026111302 allows remote authenticated users to disclose information over a network. Microsoft identifies improper neutralization of special elements passed to a downstream component, but has not disclosed the affected locus, data path, or crafted input format. Exploitation requires an authenticated Teams account and no user interaction; public records do not identify the information exposed.

The record

CVE
CVE-2026-42835
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
Microsoft
Product
Microsoft Teams for Android
Classifications
CWE-74
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <1.0.76.2026111302

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Teams for Androidversion=1.0.0 <1.0.76.2026111302

Published CVSS scores

8.1Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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