# CVE-2026-42835: Microsoft Teams for Android injection vulnerability

Source: https://junglewise.ai/threats/cve-2026-42835-microsoft-teams-for-android-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-42835 · Severity: high · CVSS 8.1 · Published 2026-06-09

Microsoft Teams for Android is a mobile communication application used for business collaboration and messaging. A security vulnerability in this app allows a logged-in user to improperly inject data that could lead to the unauthorized disclosure of sensitive information. This could result in a breach of internal communications or corporate data privacy.

Technologies: [Microsoft Teams for Android](https://junglewise.ai/threats/technologies/teams-for-android). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-42835 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42835 being exploited in the wild.

**How severe is CVE-2026-42835?** High severity, with a CVSS score of 8.1, published 9 June 2026.

**Which products and versions are affected?** Microsoft Teams for Android.

**Is there a fix for CVE-2026-42835?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-42835 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-42835?** Check whether you run Microsoft Teams for Android. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An injection vulnerability (CWE-74) exists in Microsoft Teams for Android due to the improper neutralization of special elements in output used by a downstream component. An authenticated attacker with low privileges can exploit this flaw over the network without any user interaction. Successful exploitation allows the attacker to disclose sensitive information and potentially impact service availability, as indicated by the CVSS vector. The vulnerability was disclosed by Microsoft, and users are advised to update their Android application to the latest version available in the Google Play Store.

## Affected products

- Microsoft Teams for Android

## Timeline

- 2026-06-09: disclosed: Initial disclosure by Microsoft and NVD publication.
- 2026-06-09: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42835](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42835)

## Related threats

- [Microsoft Teams for Android origin validation error](https://junglewise.ai/threats/cve-2026-69901-origin-validation-error-in-microsoft-teams-for-android-allows-an)
- [Microsoft Teams for Android code injection spoofing vulnerability](https://junglewise.ai/threats/cve-2026-122979-improper-control-of-generation-of-code-code-injection-in)
- [Microsoft Teams for Android origin validation bypass](https://junglewise.ai/threats/cve-2026-69559-microsoft-teams-for-android-origin-validation-bypass)
- [Microsoft Teams for Android information disclosure in network communication](https://junglewise.ai/threats/cve-2026-65812-microsoft-teams-for-android-information-disclosure-in-network)
- [Microsoft Teams for Android path traversal remote code execution](https://junglewise.ai/threats/cve-2026-65768-microsoft-teams-for-android-path-traversal-remote-code-execution)