PatchTheCVECVE-2017-14000: An Improper Authentication issue was discovered in Ctek SkyRouter Series 4200 and 4400, all versions prior to
CVE-2017-14000 is a critical-severity flaw (CVSS 9.4) affecting skyrouter z4200 firmware, skyrouter z4400 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An Improper Authentication issue was discovered in Ctek SkyRouter Series 4200 and 4400, all versions prior to V6.00.11. By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to access the application without authenticating.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.4 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.3% (top 17%) |
| CISA exploited list | No |
| Weakness | CWE-287 |
| Published | 2017-10-05 |
| 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-2017-14000?
skyrouter z4200 firmware: upgrade to newer than 6.00.05; skyrouter z4400 firmware: upgrade to newer than 6.00.05. Exact commands for each OS are on this page.
Is CVE-2017-14000 being exploited?
CVE-2017-14000 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-2017-14000 affect?
CVE-2017-14000 affects skyrouter z4200 firmware, skyrouter z4400 firmware. Severity is critical (CVSS 9.4). An Improper Authentication issue was discovered in Ctek SkyRouter Series 4200 and 4400, all versions prior to V6.00.11. By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to access the applica
How urgent is CVE-2017-14000?
Priority 59/100. Critical severity; Remotely exploitable, no login, no user action