CVE-2026-31164: Command Injection

Published Apr 23, 2026
·
Updated

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557B20221024 allowing attackers to execute arbitrary commands via the pppoeMtu parameter to /cgi-bin/cstecgi.cgi.

Affected Software

3 affected components
TOTOLINK A3300R firmware=17.0.0cu.557_B20221024
All of the following
TOTOLINK A3300R firmware=17.0.0cu.557_b20221024
TOTOLINK A3300R

Event History

Apr 23, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-31164?

CVE-2026-31164 is classified as a high severity vulnerability due to its potential for arbitrary command execution.

2

How do I fix CVE-2026-31164?

To remediate CVE-2026-31164, update the ToToLink A3300R firmware to a version that is not affected by this vulnerability.

3

What are the potential impacts of exploiting CVE-2026-31164?

Exploiting CVE-2026-31164 can allow an attacker to execute arbitrary commands on the affected device.

4

What version of the firmware is affected by CVE-2026-31164?

The vulnerable version of the firmware in CVE-2026-31164 is ToToLink A3300R firmware v17.0.0cu.557_B20221024.

5

Is there a known workaround for CVE-2026-31164?

As of now, the recommended solution for CVE-2026-31164 is to update the firmware to a secure version, as there are no known effective workarounds.

Company

Resources

Contact

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CVE-2026-31164 - Command Injection - SecAlerts