Insecure Direct Object Reference Vulnerability in Herowatch Go Server by About Time Technologies
CVE-2026-121817

8.7HIGH

Key Information:

Vendor

About Time Technologies

Status
Herowatch Go Server
Vendor
CVE Published:
4 November 2026

What is CVE-2026-121817?

The Herowatch Go Server, developed by About Time Technologies, is susceptible to an Insecure Direct Object Reference vulnerability. This issue allows authenticated remote attackers to manipulate specific parameters, which can result in unauthorized access to sensitive data and functionalities belonging to other users. Organizations utilizing this server should implement appropriate controls to mitigate potential data exposure and ensure the integrity of user data.

Affected Version(s)

Herowatch Go Server all

References

https://www.twcert.org.tw/en/cp-139-11364-0dce6-2.html
third-party-advisory
https://www.twcert.org.tw/tw/cp-132-11366-d92ac-1.html
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.