Is CVE-2023-51020 actively exploited?

No active exploitation of CVE-2023-51020 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-51020 be exploited remotely?

Yes. CVE-2023-51020 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-51020?

CVE-2023-51020 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-51020

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 ‘langType’ parameter of the setLanguageCfg interface of the cstecgi .cgi.

NVD Source

Risk Analysis

This flaw permits unauthorized arbitrary command execution through the langType parameter within the setLanguageCfg interface. The critical 9.8 CVSS score highlights the urgency of this issue, as it allows unauthenticated remote attackers to execute commands.

There is no public exploit available, and the vulnerability is not tracked in the CISA KEV list.

Recommended Action

Ensure the device is running the latest firmware version to patch this command execution 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-2023-51020 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.