An improper access control vulnerability exists in RT-AC87U all versions. An attacker may read or write files that are not intended to be accessed by connecting to a target device via tftp.
Conclusion & alert: CVE-2023-47678 is rated Moderate Risk (46.4/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.10%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 0.28% | 0.10% | -0.18% |
| 2 | 2025-11-18 | 0.14% | 0.28% | +0.15% |
| 3 | 2025-04-15 | — | 0.14% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| asus | rt-ac87u_firmware | — | cpe:2.3:o:asus:rt-ac87u_firmware:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://jvn.jp/en/vu/JVNVU96079387/ | Third Party Advisory |
| https://www.asus.com/event/network/EOL-product/ | Product |
| https://www.asus.com/support/ | Not Applicable |