PatchTheCVECVE-2021-20719: RFNTPS firmware versions System_01000004 and earlier, and Web_01000004 and earlier allow an attacker on the sa
CVE-2021-20719 is a medium-severity flaw (CVSS 6.8) affecting rfntps firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
RFNTPS firmware versions System_01000004 and earlier, and Web_01000004 and earlier allow an attacker on the same network segment to execute arbitrary OS commands with a root privilege via unspecified vectors.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.8 (Medium) |
| Attack vector | Adjacent network |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 62%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2021-05-20 |
| 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
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-2021-20719?
rfntps firmware: upgrade to newer than web_01000004. Exact commands for each OS are on this page.
Is CVE-2021-20719 being exploited?
CVE-2021-20719 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-2021-20719 affect?
CVE-2021-20719 affects rfntps firmware. Severity is medium (CVSS 6.8). RFNTPS firmware versions System_01000004 and earlier, and Web_01000004 and earlier allow an attacker on the same network segment to execute arbitrary OS commands with a root privilege via unspecified vectors.
How urgent is CVE-2021-20719?
Priority 33/100. No elevated risk signals yet.