CVE-2021-43517
CriticalPublic PoC
Published: 08 April 2022
Published
08 April 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0040
61.0th percentile
Risk Priority
20
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-43517 is a critical-severity an unspecified weakness vulnerability in Foscam Fi9805E Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 39.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
This vulnerability is AI-related — categorised as Other AI Platforms.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-30446
Vulnerability details
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.
- CWE(s)
AI Security AnalysisAI
- AI Category
- Other AI Platforms
- Risk Domain
- N/A
- OWASP Top 10 for LLMs 2025
- None mapped
- Classification Reason
- Matched keywords: backdoor
Related Threats
Affected Assets
foscam
fi9805e firmware
4.02.r12.00018510.10012.143900.00000
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.