XSS in Chiyu-T Bf-430
CVE-2020-8839
Stored XSS was discovered on CHIYU BF-430 232/485 TCP/IP Converter devices before 1.16.00, as demonstrated by the /if.cgi TF_submask field.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.021 (79.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Chiyu-t Bf-430
- Chiyu-t Bf-430_firmware
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-8839?
- CVE-2020-8839 is a medium-severity vulnerability in Chiyu-T Bf-430, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-02-12.
- How severe is CVE-2020-8839?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-8839 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.