What is CVE-2021-31250?

CVE-2021-31250 is a medium-severity vulnerability in Chiyu-tech Bf-430, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-06-04.

How severe is CVE-2021-31250?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-31250 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Chiyu-tech Bf-430

CVE-2021-31250

Multiple storage XSS vulnerabilities were discovered on BF-430, BF-431 and BF-450M TCP/IP Converter devices from CHIYU Technology Inc due to a lack of sanitization of the input on the components man.cgi, if.cgi, dhcpc.cgi, ppp.cgi.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.796 (99.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-31250?: CVE-2021-31250 is a medium-severity vulnerability in Chiyu-tech Bf-430, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-06-04.
How severe is CVE-2021-31250?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-31250 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.