Vulnerability in Njhyst Hy511
CVE-2025-65212
An issue was discovered in NJHYST HY511 POE core before 2.1 and plugins before 0.1. The vulnerability stems from the device's insufficient cookie verification, allowing an attacker to directly request the configuration file address and download the core configuration file without logging into the device management backend. By reading the corresponding username and self-decrypted MD5 password in the core configuration file, the attacker can directly log in to the backend, thereby bypassing the front-end backend login page.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.052 (92.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.052 · newest: 0.052 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/a2148001284/test1/blob/main/未授权访问后台漏洞EN.md (Exploit, Third Party Advisory)
- gist.github.com/a2148001284/bcdda75fc8718454f16a7b9259463719 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-65212?
- CVE-2025-65212 is a critical-severity vulnerability in Njhyst Hy511, classified under Reliance on Cookies without Validation and Integrity Checking. CVSS score: 9.8/10. Published 2026-01-06.
- How severe is CVE-2025-65212?
- Critical severity. CVSS v3 base score is 9.8 out of 10.