Is CVE-2022-40942 actively exploited?

No active exploitation of CVE-2022-40942 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-40942 be exploited remotely?

Yes. CVE-2022-40942 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-40942?

CVE-2022-40942 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2022-40942

CRITICAL

CVE-2022-40942

CWE-787Published: September 28, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Tenda TX3 US_TX3V1.0br_V16.03.13.11 is vulnerable to stack overflow via compare_parentcontrol_time.

NVD Source

Risk Analysis

Tenda TX3 firmware is susceptible to a stack overflow vulnerability in its parental control functionality. This flaw could allow a remote attacker to crash the device or execute arbitrary code.

There is no public exploit known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low attack complexity.

Recommended Action

Apply the latest firmware updates provided by Tenda to resolve the stack overflow 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-2022-40942 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.