Cyber Resilience

CVE-2021-43663

HighPublic PoC

Published: 31 March 2022

Published
31 March 2022
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0081 74.7th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-43663 is a high-severity Command Injection (CWE-77) vulnerability in Totolink Ex300 V2 Firmware. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 25.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a command injection vulnerability via the component cloudupdate_check.

CWE(s)
CWE-77

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

totolink
ex300 v2 firmware
4.0.3c.140_b20210429

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References