CVE-2026-5104: Totolink A3300R cstecgi.cgi setStaticRoute command injection

Published Mar 30, 2026
·
Updated

A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557b20221024. Impacted is the function setStaticRoute of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument ip leads to command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

Affected Software

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

Event History

Mar 30, 2026
CVE Published
via MITRE·02:00 AM
Data Sourced
via MITRE·02:00 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·03:15 AM
DescriptionSeverityWeaknessAffected Software
Feb 6, 58230
Event
via FIRST·07:43 AM
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Frequently Asked Questions

1

What is the severity of CVE-2026-5104?

CVE-2026-5104 is classified as a critical vulnerability as it allows for command injection via the setStaticRoute function.

2

How do I fix CVE-2026-5104?

To fix CVE-2026-5104, update the Totolink A3300R firmware to the latest version that addresses this vulnerability.

3

What systems are affected by CVE-2026-5104?

CVE-2026-5104 affects Totolink A3300R devices running firmware version 17.0.0cu.557_b20221024.

4

What type of attack is possible with CVE-2026-5104?

CVE-2026-5104 enables attackers to perform command injection attacks through manipulated IP arguments.

5

Who is the vendor associated with CVE-2026-5104?

The vendor associated with CVE-2026-5104 is Totolink, which manufactures the affected A3300R router.

Contact

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