Is CVE-2023-37703 actively exploited?

No active exploitation of CVE-2023-37703 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-37703 be exploited remotely?

Yes. CVE-2023-37703 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-37703?

CVE-2023-37703 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-37703

CWE-787Published: July 10, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Tenda FH1203 V2.0.1.6 was discovered to contain a stack overflow via the speed_dir parameter in the formSetSpeedWan function.

NVD Source

Risk Analysis

The Tenda FH1203 router is vulnerable to a stack overflow in the WAN speed configuration function. This critical flaw could allow an unauthenticated remote attacker to compromise the device.

No public exploit is currently known, and the vulnerability is not in the CISA KEV catalog. It is remotely exploitable.

Recommended Action

Update the Tenda FH1203 firmware to the latest available version.

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-2023-37703 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.