CVE-2026-31163: 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 dhcpMtu 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·07:17 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-31163?
CVE-2026-31163 is a high-severity vulnerability due to the potential for unauthorized command execution.
2
How do I fix CVE-2026-31163?
To fix CVE-2026-31163, upgrade the ToToLink A3300R firmware to a version later than v17.0.0cu.557_B20221024.
3
What type of attack is possible with CVE-2026-31163?
CVE-2026-31163 allows attackers to execute arbitrary commands on the device via a parameter in a CGI script.
4
Which devices are affected by CVE-2026-31163?
CVE-2026-31163 affects the ToToLink A3300R with firmware version 17.0.0cu.557_B20221024.
5
Can CVE-2026-31163 lead to a complete system compromise?
Yes, CVE-2026-31163 can lead to complete system compromise due to arbitrary command execution capabilities.