PatchTheCVECVE-2017-11456: Geneko GWR routers allow directory traversal sequences starting with a /../ substring, as demonstrated by unau
CVE-2017-11456 is a high-severity flaw (CVSS 7.5) affecting gwr352 3g router firmware, gwr352wv wide voltage 3g router firmware, gwr252 edge router firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Geneko GWR routers allow directory traversal sequences starting with a /../ substring, as demonstrated by unauthenticated read access to the configuration file.
Why this priority
- High severity
- EPSS top 5%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 8.8% (top 5%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2017-07-19 |
| 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
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Exploit-DB: Geneko Routers - Path Traversal
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-2017-11456?
gwr352 3g router firmware: mitigate or apply the listed mitigation; gwr352wv wide voltage 3g router firmware: mitigate or apply the listed mitigation; gwr252 edge router firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2017-11456 being exploited?
CVE-2017-11456 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-2017-11456 affect?
CVE-2017-11456 affects gwr352 3g router firmware, gwr352wv wide voltage 3g router firmware, gwr252 edge router firmware. Severity is high (CVSS 7.5). Geneko GWR routers allow directory traversal sequences starting with a /../ substring, as demonstrated by unauthenticated read access to the configuration file.
How urgent is CVE-2017-11456?
Priority 60/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action