SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-20657

Improper access control vulnerability in SolarView Compact SV-CPT-MC310 prior to Ver.6.5 allows an authenticated attacker to obtain and/or alter the setting information without the access privilege via unspecified vectors.

MEDIUM 5.4EPSS 2.83%

Does this matter?

Lower severity and a low EPSS score (2.83%). Track it; it rarely justifies an emergency change on its own.

Description

Improper access control vulnerability in SolarView Compact SV-CPT-MC310 prior to Ver.6.5 allows an authenticated attacker to obtain and/or alter the setting information without the access privilege via unspecified vectors.

CVSS 3.1
5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS
2.83% probability · 87th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
contec/sv-cpt-mc310 firmware
Source
vultures@jpcert.or.jp
EPSS trend
0%3%5%26 October 2026: 2.83%26 October 202626 October 2026

EPSS 2.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.