RCE in Totolink Ex300 V2

CVE-2021-43663

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

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.010 (58.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Totolink Ex300_v2
Totolink Ex300_v2_firmware — versions 4.0.3c.140_b20210429
N/a — versions n/a

Weakness classification (CWE)

CWE-77 — Command Injection

References

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

Frequently asked questions

What is CVE-2021-43663?: CVE-2021-43663 is a high-severity vulnerability in Totolink Ex300 V2, classified under Command Injection. CVSS score: 7.5/10. Published 2022-03-31.
How severe is CVE-2021-43663?: High severity. CVSS v3 base score is 7.5 out of 10.