High severity · published Jan 13, 2021
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…
7.5
CVSS
1.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
US
Univerge Sv8500 Firmware · Nec
s6 through s8 · source: NVD
US
Univerge Sv9500 Firmware · Nec
v1 through v7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-5686
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-5686
Third Party Advisory
https://jvn.jp/en/jp/JVN38784555/index.html
Vendor Advisory
https://www.necplatforms.co.jp/en/press/security_adv.html
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