Is CVE-2026-7140 actively exploited?

No active exploitation of CVE-2026-7140 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-7140 be exploited remotely?

Yes. CVE-2026-7140 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-7140?

CVE-2026-7140 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-7140

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

9.8

CVSS v3.1

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

Official Description

A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument HTTP leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

NVD Source

Technical Analysis

CVE-2026-7140 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.