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High-Risk CVE-2026-121816 in Time Technologies' Herowatch Mini

High-Risk CVE-2026-121816 in Time Technologies' Herowatch Mini

First seen 4 Nov 2026, 13:17 UTC • •
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ThreatCluster AI
ThreatCluster •November 4, 2026 at 13:18 UTC
  • •CVE-2026-121816 allows unauthenticated access to Herowatch Mini devices.
  • •High risk for devices on shared or poorly isolated networks.
  • •No patch available; replacement is advised for affected devices.

Time Technologies' Herowatch Mini has been identified with CVE-2026-121816, a Missing Authentication vulnerability. This flaw allows unauthenticated remote attackers to connect to the device's ADB service and gain an ADB shell, potentially accessing sensitive device resources. The risk is particularly high for devices on shared or poorly isolated networks, as attackers do not require user action or complex setup to exploit this vulnerability. The assessed impact includes unauthorized access to stored data and disruption of service, especially for wearable or safety devices. Organizations and households using these devices are urged to prioritize containment and replacement, as no patch is currently available. Active exploitation status remains unconfirmed, and the vulnerability was published on November 4, 2026, with a CVSS score of 8.7, indicating a high severity level. Monitoring for unexpected connections and reviewing device logs is recommended until replacement can be implemented.

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Timeline

2026-11-04
CVE-2026-121816 published
Time Technologies disclosed a Missing Authentication vulnerability in Herowatch Mini, allowing unauthenticated remote access.
Redpacketsecurity

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Common questions

What devices are affected?
The Herowatch Mini developed by Time Technologies is affected by this vulnerability.
Is there a patch available?
No, there is currently no patch available for this vulnerability.
What should organizations do?
Organizations should prioritize containment and replacement of affected devices, especially those on shared networks.