Is CVE-2026-7156 actively exploited?

No active exploitation of CVE-2026-7156 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-7156 be exploited remotely?

Yes. CVE-2026-7156 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-7156?

CVE-2026-7156 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-7156

CWE-77Published: April 27, 2026· Updated: Apr 28, 2026

9.8

CVSS v3.1

EPSS:0.89%probability of exploitation in 30 daysPercentile:75.7th

Official Description

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument HTTP results in os command injection. The attack may be launched remotely. The exploit is now public and may be used.

NVD Source

Technical Analysis

CVE-2026-7156 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.