Is CVE-2023-51021 actively exploited?

No active exploitation of CVE-2023-51021 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-51021 be exploited remotely?

Yes. CVE-2023-51021 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-51021?

CVE-2023-51021 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-51021

NVD-CWE-noinfoPublished: December 22, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘merge’ parameter of the setRptWizardCfg interface of the cstecgi .cgi.

NVD Source

Risk Analysis

An unauthorized arbitrary command execution vulnerability exists in the merge parameter of the setRptWizardCfg interface. With a CVSS score of 9.8, this represents a critical security risk that could lead to full system compromise. The vulnerability is remotely exploitable without authentication.

No public exploit is currently known for this issue, and it is not included in the CISA KEV database.

Recommended Action

Apply the latest firmware updates provided by TOTOLink for the EX1800T device to remediate this vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-51021 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.