Auth bypass in Tendacn Ac18
CVE-2020-24987
Tenda AC18 Router through V15.03.05.05_EN and through V15.03.05.19(6318) CN devices could cause a remote code execution due to incorrect authentication handling of vulnerable logincheck() function in /usr/lib/lua/ngx_authserver/ngx_wdas.lua file if the administrator UI Interface is set to "radius".
Vulnerability class: Broken Authentication
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: 0.031 (87.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tendacn.com/en/product/AC18.html (Product, Vendor Advisory)
- drive.google.com/file/d/1iqpr0EofOBC6kCq2USTOBPRlJu_naFjQ/view (Broken Link)
- cwe.mitre.org/data/definitions/287.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-24987?
- CVE-2020-24987 is a critical-severity vulnerability in Tendacn Ac18, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-09-04.
- How severe is CVE-2020-24987?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-24987 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.