Is CVE-2023-40041 actively exploited?

No active exploitation of CVE-2023-40041 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40041 be exploited remotely?

Yes. CVE-2023-40041 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40041?

CVE-2023-40041 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-40041

CWE-787Published: August 8, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

TOTOLINK T10_v2 5.9c.5061_B20200511 has a stack-based buffer overflow in setWiFiWpsConfig in /lib/cste_modules/wps.so. Attackers can send crafted data in an MQTT packet, via the pin parameter, to control the return address and execute code.

NVD Source

Risk Analysis

The TOTOLINK T10_v2 firmware contains a stack-based buffer overflow in the WPS configuration module, triggered by crafted data in an MQTT packet. This critical vulnerability allows for remote code execution and carries a 9.8 CVSS score.

There is no known public exploit for this issue, and it is not included in the CISA KEV. The vulnerability is remotely exploitable.

Recommended Action

Update the device firmware to the latest version available from the vendor to patch the vulnerable code path.

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-2023-40041 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.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.