Is CVE-2023-39670 actively exploited?

No active exploitation of CVE-2023-39670 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-39670 be exploited remotely?

Yes. CVE-2023-39670 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-39670?

CVE-2023-39670 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-39670

CRITICAL

CVE-2023-39670

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

9.8

CVSS v3.1

Official Description

Tenda AC6 _US_AC6V1.0BR_V15.03.05.16 was discovered to contain a buffer overflow via the function fgets.

NVD Source

Risk Analysis

Tenda AC6 routers are affected by a buffer overflow vulnerability in the fgets function, allowing remote attackers to execute arbitrary code. The vulnerability is critical with a CVSS score of 9.8.

No public exploit is known for this vulnerability, and it is not in the CISA KEV catalog. The flaw is remotely exploitable with low complexity.

Recommended Action

Update the router firmware to the latest available version from Tenda. Prevent remote access to the device 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-2023-39670 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.