Is CVE-2023-6906 actively exploited?

No active exploitation of CVE-2023-6906 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-6906 be exploited remotely?

Yes. CVE-2023-6906 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-6906?

CVE-2023-6906 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-6906

CWE-120Published: December 18, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument flag with the input ie8 leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-248268. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Risk Analysis

Totolink A7100RU firmware contains a buffer overflow vulnerability in its HTTP request handler, triggered by a specific input parameter. This critical flaw allows remote code execution, as indicated by the 9.8 CVSS score.

Public exploit details are available, but the vulnerability is not in the CISA KEV database. It is remotely exploitable with low attack complexity.

Recommended Action

Apply the latest firmware updates provided by the vendor. If no update is available, restrict access to the device's management interface.

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-2023-6906 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.