CVE-2021-43517

9.8 criticalEPSS 1.7%

Critical (9.8) in foscam fi9805e firmware. EPSS 1.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
Published: 2022-04-08
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

foscam:fi9805e_firmware

References

https://habr.com/ru/post/486856/
https://habr.com/ru/post/486856/

Check your stack JSON