PatchTheCVECVE-2025-65212: An issue was discovered in NJHYST HY511 POE core before 2.1 and plugins before 0.1
CVE-2025-65212 is a critical-severity flaw (CVSS 9.8) affecting hy511 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 direct
Why this priority
- Critical severity
- EPSS top 7%: very likely to be exploited
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 5.4% (top 7%) |
| CISA exploited list | No |
| Weakness | CWE-565 |
| Published | 2026-01-06 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-65212?
hy511 firmware: upgrade to 2.1. Exact commands for each OS are on this page.
Is CVE-2025-65212 being exploited?
CVE-2025-65212 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-65212 affect?
CVE-2025-65212 affects hy511 firmware. Severity is critical (CVSS 9.8). 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 down
How urgent is CVE-2025-65212?
Priority 70/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action