CVE-2021-44247

Name: CVE-2021-44247
Creator: NVD / NIST
Published: 2022-02-04T02:15:07.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.81%

Last modified Jun 17, 2026

CVE-2021-44247 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Totolink devices A3100R v4.1.2cu.5050_B20200504, A830R v5.9c.4729_B20191112, and A720R v4.1.5cu.470_B20200911 were discovered to contain command injection vulnerability in the function setNoticeCfg. This vulnerability allows attackers to execute arbitrary commands via the IpFrom parameter.. EPSS estimates a 2.81% chance of exploitation in the next 30 days.

Description

Totolink devices A3100R v4.1.2cu.5050_B20200504, A830R v5.9c.4729_B20191112, and A720R v4.1.5cu.470_B20200911 were discovered to contain command injection vulnerability in the function setNoticeCfg. This vulnerability allows attackers to execute arbitrary commands via the IpFrom parameter.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.81%

84.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Totolink	A720r Firmware	4.1.5cu.470_b20200911
Totolink	A830r Firmware	5.9c.4729_b20191112
Totolink	A3100r Firmware	4.1.2cu.5050_b20200504

References

https://github.com/pjqwudi/my_vuln/blob/main/totolink/vuln_1/1.mdExploit, Third Party Advisory
https://github.com/pjqwudi/my_vuln/blob/main/totolink/vuln_1/1.mdExploit, Third Party Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44247?

How severe is CVE-2021-44247?

CVE-2021-44247 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.81% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44247?

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-2021-44247?

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

Scan your code now

Source: NVD / NIST