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CVE-2026-5994 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: April 13, 2026

Totolink A7100RU - Command Injection

Published: April 10, 2026Updated: April 13, 2026Remote Exploitable

Overview

Totolink A7100RU 7.4cu.2313_b20191024 contains a command injection caused by manipulation of the "telnet_enabled" argument in /cgi-bin/cstecgi.cgi's setTelnetCfg 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 or apply vendor patches addressing this issue.

References

Social Media Activity(2 posts)

OffSequence

@offseq

Apr 10, 2026

⚠️ CVE-2026-5994: CRITICAL OS command injection in Totolink A7100RU (7.4cu.2313_b20191024). Remote attackers can run OS commands via setTelnetCfg. No patch yet; public exploit released. Restrict access & monitor traffic. https://radar.offseq.com/threat/cve-2026-5994-os-command-injection-in-totolink-a71-2d1c7675 #OffSeq #Vuln #RouterSecurity

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TheHackerWire

@thehackerwire

Apr 10, 2026

🔴 CVE-2026-5994 - Critical (9.8) A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This issue affects the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument telnet_enabled resu... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-5994/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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Related Resources

Details

CVE ID: CVE-2026-5994
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