CVE-2018-8879
9.8
CRITICAL · CVSS 3.1 · EPSS 17.2% (pctl 97)
Patch early
EPSS 17.2% — above the 10% action threshold.
Description
Stack-based buffer overflow in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote attackers to execute arbitrary code by providing a long string to the blocking.asp page via a GET or POST request. Vulnerable parameters are flag, mac, and cat_id.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 17.19% — more likely to be exploited than 97% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2019-11-21 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| asus | rt-ac66u |
| asus | rt-ac66u firmware |
References
→ the Explorer · watch your stack · NVD