CVE-2021-43664

Name: CVE-2021-43664
Creator: NVD / NIST
Published: 2022-03-30T23:15:07.737+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.67%

Last modified Jun 17, 2026

CVE-2021-43664 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a command injection vulnerability via the component process forceugpo.. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.67%

73.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Totolink	Ex300 V2 Firmware	4.0.3c.140_b20210429

References

https://github.com/chibataiki/iot-vuls/blob/main/totolink/command-injection2.mdExploit, Third Party Advisory
https://github.com/chibataiki/iot-vuls/blob/main/totolink/command-injection2.mdExploit, Third Party Advisory

Timeline

Published: Mar 30, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43664?

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

How severe is CVE-2021-43664?

CVE-2021-43664 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43664?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43664?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST