Auth bypass in Unisoon Ultralog Express
CVE-2020-3920
UltraLog Express device management interface does not properly perform access authentication in some specific pages/functions. Any user can access the privileged page to manage accounts through specific system directory.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (56.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Unisoon Ultralog Express — versions 1.4.0
- Unisoon Ultralog Express
- Unisoon Ultralog Express Firmware — versions 1.4.0
Weakness classification (CWE)
References
- www.twcert.org.tw/tw/cp-132-3452-937d6-1.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-3920?
- CVE-2020-3920 is a high-severity vulnerability in Unisoon Ultralog Express, classified under Missing Authentication for Critical Function. CVSS score: 8.1/10. Published 2020-03-27.
- How severe is CVE-2020-3920?
- High severity. CVSS v3 base score is 8.1 out of 10.