CVE-2025-65212

CVE-2025-65212 is a critical-severity vulnerability in Njhyst Hy511 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-565.

Key facts

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-65212?
CVE-2025-65212 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-65212 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65212?
CVE-2025-65212 affects Njhyst Hy511 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-65212?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-65212 have an EU (EUVD) identifier?
Yes. CVE-2025-65212 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1016.
When was CVE-2025-65212 published?
CVE-2025-65212 was published on 2026-01-06 and last updated on 2026-06-17.

References

Affected products (1)

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