Integer overflow in Chiyu-tech Bf-630
CVE-2021-31642
A denial of service condition exists after an integer overflow in several IoT devices from CHIYU Technology, including BIOSENSE, Webpass, and BF-630, BF-631, and SEMAC. The vulnerability can be explored by sending an unexpected integer (>…
Vulnerability class: Integer Overflow
EPSS: 0.437 (98.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
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)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-31642?
- CVE-2021-31642 is a medium-severity vulnerability in Chiyu-tech Bf-630, classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2021-06-01.
- How severe is CVE-2021-31642?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-31642 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.