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CVE-2026-5853 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: April 9, 2026

Totolink A7100RU - Command Injection

Published: April 9, 2026Updated: April 9, 2026Remote Exploitable

Overview

Totolink A7100RU 7.4cu.2313_b20191024 contains a command injection caused by manipulation of the "addrPrefixLen" argument in setIpv6LanCfg function of /cgi-bin/cstecgi.cgi CGI Handler, 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(1 post)

TheHackerWire

@thehackerwire

Apr 9, 2026

🔴 CVE-2026-5853 - Critical (9.8) A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setIpv6LanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument addr... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-5853/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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Related Resources

Details

CVE ID: CVE-2026-5853
Severity: Critical
CVSS Score: 9.8
Type: command_injection
Status: new
EPSS: 89.2%
Social Posts: 1

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