HighVulnerabilityActiveNo patchCVE-2026-121816CVE-2026-121817· updated Nov 8
TWCERT: Three High-Severity Vulnerabilities in Abouttime Tech Herowatch Series; Product Reached End-of-Life Without Patch
On November 4, 2026, TWCERT/CC disclosed three high-severity vulnerabilities in Abouttime Tech's Herowatch series, including an insecure direct object reference flaw in Herowatch Go Server (CVE-2026-121817), firmware signed with publicly known test keys in Herowatch Mini (CVE-2026-121818), and missing authentication in the Herowatch Mini ADB service (CVE-2026-121816) .