CVE-2025-12080: Intent Abuse in Google Messages for Wear OS for Silent Message Sending

Severity: medium (CVSS 6.9 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-27 · updated 2026-10-08
Weakness: CWE-345

Description

On Wear OS devices, when Google Messages is configured as the default SMS/MMS/RCS application, the handling of ACTION_SENDTO intents utilizing the sms:, smsto:, mms:, and mmsto: Uniform Resource Identifier (URI) schemes is incorrectly implemented. Due to this misconfiguration, an attacker capable of invoking an Android intent can exploit this vulnerability to send messages on the user’s behalf to arbitrary receivers without requiring any further user interaction or specific permissions. This allows for the silent and unauthorized transmission of messages from a compromised Wear OS device.

Affected products

Google WearOS: before 30-04-2025 — fixed in 30-04-2025

How to fix

Upgrade to a fixed version: Google WearOS 30-04-2025. Check the vendor advisory for mitigations.

References

https://towerofhanoi.it/writeups/cve-2025-12080/

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