CVE-2026-121817
About Time Technologies｜Herowatch Go Server - Insecure Direct Object Reference
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.
Fixes and workarounds
Fix
The product is no longer maintained. Users are advised to replace it with a supported device.
Source: CNA: twcertAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Herowatch Go Server About Time Technologies |
all (affected, custom)
Other versions: unaffected |
CNA: twcert |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
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 | CNA: twcert |
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA: twcert |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.twcert.org.tw/en/cp-139-11364-0dce6-2.htmlCNA: twcert · third-party-advisory
- https://www.twcert.org.tw/tw/cp-132-11366-d92ac-1.htmlCNA: twcert · third-party-advisory
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