CVE-2022-26209

Name: CVE-2022-26209
Creator: NVD / NIST
Published: 2022-03-15T22:15:14.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.24%

Last modified Jun 17, 2026

CVE-2022-26209 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Totolink A830R V5.9c.4729_B20191112, A3100R V4.1.2cu.5050_B20200504, A950RG V4.1.2cu.5161_B20200903, A800R V4.1.2cu.5137_B20200730, A3000RU V5.9c.5185_B20201128, and A810R V4.1.2cu.5182_B20201026 were discovered to contain a command injection vulnerability in the function setUploadSetting, via the FileName parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.. EPSS estimates a 2.24% chance of exploitation in the next 30 days.

Description

Totolink A830R V5.9c.4729_B20191112, A3100R V4.1.2cu.5050_B20200504, A950RG V4.1.2cu.5161_B20200903, A800R V4.1.2cu.5137_B20200730, A3000RU V5.9c.5185_B20201128, and A810R V4.1.2cu.5182_B20201026 were discovered to contain a command injection vulnerability in the function setUploadSetting, via the FileName parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.

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

2.24%

80.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Totolink	A830r Firmware	5.9c.4729_b20191112
Totolink	A3100r Firmware	4.1.2cu.5050_b20200504
Totolink	A950rg Firmware	4.1.2cu.5161_b20200903
Totolink	A800r Firmware	4.1.2cu.5137_b20200730
Totolink	A3000ru Firmware	5.9c.5185_b20201128
Totolink	A810r Firmware	4.1.2cu.5182_b20201026

References

https://github.com/pjqwudi1/my_vuln/blob/main/totolink/vuln_24/24.mdExploit, Third Party Advisory
https://github.com/pjqwudi1/my_vuln/blob/main/totolink/vuln_24/24.mdExploit, Third Party Advisory

Timeline

Published: Mar 15, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-26209?

How severe is CVE-2022-26209?

CVE-2022-26209 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.24% probability of exploitation in the next 30 days.

How do I fix CVE-2022-26209?

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-2022-26209?

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

Scan your code now

Source: NVD / NIST