CVE-2026-31165: 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 pppoeServiceName 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
Frequently Asked Questions
1
What is the severity of CVE-2026-31165?
CVE-2026-31165 is classified as a critical vulnerability due to the potential for arbitrary command execution.
2
How do I fix CVE-2026-31165?
To fix CVE-2026-31165, update the ToToLink A3300R firmware to a version later than 17.0.0cu.557_B20221024.
3
What devices are affected by CVE-2026-31165?
CVE-2026-31165 affects the ToToLink A3300R firmware version 17.0.0cu.557_B20221024.
4
What is the impact of CVE-2026-31165?
The impact of CVE-2026-31165 allows attackers to execute arbitrary commands on the affected ToToLink A3300R device.
5
Who should be concerned about CVE-2026-31165?
Users and administrators of ToToLink A3300R routers running the vulnerable firmware should take immediate action to mitigate the risk.