CVE-2026-121817

HIGH
MEDIUM Priority: 0.04 BB Relevance: 77/100
Published: 2026-11-04 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: High
VI: None
VA: None

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.

References & Advisories (2)

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.44%
Raw Score 0.004430
Percentile 39.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00443
2026-11-12
0.00443
2026-11-10
0.00443
2026-11-09
0.00443
2026-11-08
0.00443
2026-11-07
0.00443
2026-11-06
0.00443
2026-11-05
0.00443
2026-11-04
0.00443

Intelligence Sources

mitre ref →
nvd ref →