Auth bypass in Nec Univerge Sv8500
CVE-2020-5686
Incorrect implementation of authentication algorithm issue in UNIVERGE SV9500 series from V1 to V7and SV8500 series from S6 to S8 allows an attacker to access the remote system maintenance feature and obtain the information by sending a specially crafted request to a specific URL.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Nec Univerge Sv8500
- Nec Univerge Sv8500 Firmware
- Nec Univerge Sv9500
- Nec Univerge Sv9500 Firmware
- Nec Corporation Univerge Sv9500/sv8500 Series — versions SV9500 series from V1 to V7and SV8500 series from S6 to S8
Weakness classification (CWE)
References
- www.necplatforms.co.jp/en/press/security_adv.html (Vendor Advisory)
- jvn.jp/en/jp/JVN38784555/index.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-5686?
- CVE-2020-5686 is a high-severity vulnerability in Nec Univerge Sv8500, classified under Improper Authentication. CVSS score: 7.5/10. Published 2021-01-13.
- How severe is CVE-2020-5686?
- High severity. CVSS v3 base score is 7.5 out of 10.