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CVE-2026-6155 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: April 13, 2026

Totolink A7100RU - Command Injection

Published: April 13, 2026Updated: April 13, 2026Remote Exploitable

Overview

Totolink A7100RU 7.4cu.2313 contains a command injection caused by manipulation of the argument pppoeServiceName in /cgi-bin/cstecgi.cgi setWanCfg function, letting remote attackers execute OS commands, exploit requires no special privileges.

Severity & Score

Severity: Critical

CVSS Score: 9.8

EPSS Score: 89.2%(Probability of exploitation in next 30 days)

Impact

Remote attackers can execute arbitrary OS commands, potentially leading to full system compromise.

Mitigation

Update to the latest version.

References

Social Media Activity(2 posts)

OffSequence

@offseq

Apr 13, 2026

CRITICAL: CVE-2026-6155 in Totolink A7100RU (fw 7.4cu.2313) allows unauthenticated OS command injection via pppoeServiceName in CGI handler. No patch yet — restrict remote access & monitor activity. Details: https://radar.offseq.com/threat/cve-2026-6155-os-command-injection-in-totolink-a71-7391e9c3 #OffSeq #CVE20266155 #Infosec

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TheHackerWire

@thehackerwire

Apr 13, 2026

🔴 CVE-2026-6155 - Critical (9.8) A weakness has been identified in Totolink A7100RU 7.4cu.2313. The impacted element is the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument pppoeServiceName can lead to os c... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-6155/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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Related Resources

Details

CVE ID: CVE-2026-6155
Severity: Critical
CVSS Score: 9.8
Type: command_injection
Status: unconfirmed
EPSS: 89.2%
Social Posts: 2

CWE

CWE-77

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score

89.2%Probability of exploitation in the next 30 days