CVE-2026-121817

About Time Technologies|Herowatch Go Server - Insecure Direct Object Reference

Published Nov 4, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Herowatch Go Server developed by About Time Technologies has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify specific parameters to access or operate other users' data and functions.

Remediation

Vendor Solution

The product is no longer maintained. Users are advised to replace it with a supported device.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared About Time Technologies
About Time Technologies herowatch Go Server
Vendors & Products About Time Technologies
About Time Technologies herowatch Go Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Herowatch Go Server developed by About Time Technologies has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify specific parameters to access or operate other users' data and functions.
Title About Time Technologies|Herowatch Go Server - Insecure Direct Object Reference
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
twcert
Published
Updated
Nov 4, 2026, 8:00 PM
Reserved
Nov 4, 2026, 5:40 AM
Status
Deferred
Published
Nov 4, 2026, 7:17 AM
Modified
Nov 4, 2026, 8:19 PM