CVE-2026-121818
Received Received - Intake

System Signing Flaw in Herowatch Mini Allows Privilege Escalation

Publication date: 2026-11-04

Last updated on: 2026-11-04

Assigner: TWCERT/CC

Description
Herowatch Mini developed by About Time Technologies has a system signing vulnerability. Authenticated local attackers can exploit a publicly available test key to sign malicious programs, allowing them to elevate privileges and execute arbitrary code.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-04
Last Modified
2026-11-04
Generated
2026-11-04
EPSS Evaluated
N/A
NVD
CVE-2026-121818
EUVD
EUVD-2026-116762

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
About Time Technologies Herowatch Go all

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-1394 The product uses a default cryptographic key for potentially critical functionality.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
AI Quick Actions have not been generated yet.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-121818. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...