Buffer overflow in ASUS Rt-Ac66u
CVE-2018-8879
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.172 (97.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.172 · newest: 0.172 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.asus.com/Networking/RTAC66U/HelpDesk_BIOS (Product)
- pagedout.institute/download/PagedOut_001_beta1.pdf (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-8879?
- CVE-2018-8879 is a critical-severity vulnerability in ASUS Rt-Ac66u, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-11-21.
- How severe is CVE-2018-8879?
- Critical severity. CVSS v3 base score is 9.8 out of 10.