CVE-2026-5178: Totolink A3300R cstecgi.cgi setIptvCfg command injection

Published Mar 31, 2026
·
Updated

A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557b20221024. Affected by this issue is the function setIptvCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument vlanPriLan3 leads to command injection. Remote exploitation of the attack is possible. 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 31, 2026
CVE Published
via MITRE·03:00 AM
Data Sourced
via MITRE·03:00 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·04:16 AM
DescriptionSeverityWeaknessAffected Software
Feb 13, 58282
Event
via FIRST·08:29 PM
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Frequently Asked Questions

1

What is the severity of CVE-2026-5178?

CVE-2026-5178 is classified as a high-severity vulnerability due to its potential for command injection.

2

How do I fix CVE-2026-5178?

To mitigate CVE-2026-5178, it is recommended to update the Totolink A3300R to the latest firmware version.

3

What specific function is affected by CVE-2026-5178?

CVE-2026-5178 affects the setIptvCfg function in the cstecgi.cgi file.

4

What is the impact of exploiting CVE-2026-5178?

Exploitation of CVE-2026-5178 can allow remote attackers to execute arbitrary commands on the affected device.

5

Which version of Totolink A3300R is vulnerable to CVE-2026-5178?

The vulnerable version of Totolink A3300R is 17.0.0cu.557_b20221024.

Contact

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