What is CVE-2021-43517?

CVE-2021-43517 is a critical-severity vulnerability in Foscam Fi9805e. CVSS score: 9.8/10. Published 2022-04-08.

How severe is CVE-2021-43517?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Foscam Fi9805e

CVE-2021-43517

FOSCAM Camera FI9805E with firmware V4.02.R12.00018510.10012.143900.00000 contains a backdoor that opens Telnet port when special command is sent on port 9530.

EPSS: 0.017 (74.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Foscam Fi9805e
Foscam Fi9805e_firmware — versions 4.02.r12.00018510.10012.143900.00000
N/a — versions n/a

References

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

Frequently asked questions

What is CVE-2021-43517?: CVE-2021-43517 is a critical-severity vulnerability in Foscam Fi9805e. CVSS score: 9.8/10. Published 2022-04-08.
How severe is CVE-2021-43517?: Critical severity. CVSS v3 base score is 9.8 out of 10.