# CVE-2026-121816: About Time Technologies｜Herowatch Mini - Missing Authentication

- Exploited (CISA KEV): no
- Published: 2026-11-04
- CVSS: 8.7 HIGH (v4.0)
- EPSS: no score
- CWE: CWE-306

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | No public claim | — | — |
| Vercel | No public claim | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

## Social

2 posts seen since 2026-11-04.

- bluesky 2026-11-04: CVE-2026-121816 - About Time Technologies｜Herowatch Mini - Missing Authentication CVE ID : CVE-2026-121816    Published : Nov. 4, 2026, 6:24 a.m. \| 40 minutes ago    Description : Herowatch Mini developed by About Time Technologies has a Missing Authentication vulnerability. U... (https://bsky.app/profile/cve.skyfleet.blue/post/ftgwymbnt7rdk)
- bluesky 2026-11-04: CVE-2026-121816 HIGH (CVSS 8.8) Herowatch Mini developed by About Time Technologies has a Missing Authentication vulnerability Fix: https://patchthecve.com/cve/CVE-2026-121816.html (https://bsky.app/profile/patchthecve.bsky.social/post/3mzhqls4tsj22)

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-121816 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-121816