# CVE-2018-10561: Dasan GPON Routers Authentication Bypass Vulnerability

- Exploited (CISA KEV): yes, added 2022-03-31
- Published: 2018-05-04
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 92.8% (100th percentile)
- CWE: CWE-287

An issue was discovered on Dasan GPON home routers. It is possible to bypass authentication simply by appending "?images" to any URL of the device that requires authentication, as demonstrated by the /menu.html?images/ or /GponForm/diag_FORM?images/ URI. One can then manage the device.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | Before feed history | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Before feed history | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2018-10561 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2018-10561