CVE-2026-121816
About Time Technologies｜Herowatch Mini - Missing Authentication
Herowatch Mini developed by About Time Technologies has a Missing Authentication vulnerability. Unauthenticated remote attackers can connect to the affected device's ADB service and obtain an ADB shell, thereby accessing device resources or performing related operations.
Fixes and workarounds
Fix
The product is no longer maintained. Users are advised to replace it with a supported device.
Source: CNA: twcertAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Herowatch Mini About Time Technologies |
all (affected, custom)
Other versions: unaffected |
CNA: twcert |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA: twcert |
| 3.1 / 8.8 high |
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: twcert |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.twcert.org.tw/tw/cp-132-11355-341da-1.htmlCNA: twcert · third-party-advisory
- https://www.twcert.org.tw/en/cp-139-11356-8292a-2.htmlCNA: twcert · third-party-advisory
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