CVE-2021-31252

Bf 430 Firmware vulnerability

CVSS

6.1

EPSS

28.6%

EPSS pct

98th

Exploited

No known

An open redirect vulnerability exists in BF-630, BF-450M, BF-430, BF-431, BF631-W, BF830-W, Webpass, and SEMAC devices from CHIYU Technology that can be exploited by sending a link that has a specially crafted URL to convince the user to click on it.

Affected vendor

Chiyu Tech

Affected product

Bf 430 Firmware

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness type (CWE)

CWE-601 — Open Redirect

Published

2021-06-04

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 28.6% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2021-31252

Confirm whether Chiyu Tech Bf 430 Firmware is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-31252.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-31252

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