Is CVE-2026-6155 actively exploited?

No active exploitation of CVE-2026-6155 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6155 be exploited remotely?

Yes. CVE-2026-6155 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6155?

CVE-2026-6155 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-6155

CWE-77Published: April 13, 2026· Updated: Apr 13, 2026

9.8

CVSS v3.1

EPSS:0.89%probability of exploitation in 30 daysPercentile:75.6th

Official Description

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 command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

NVD Source

Technical Analysis

CVE-2026-6155 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.