Is CVE-2023-39454 actively exploited?

No active exploitation of CVE-2023-39454 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-39454 be exploited remotely?

Yes. CVE-2023-39454 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-39454?

CVE-2023-39454 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-39454

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

9.8

CVSS v3.1

Official Description

Buffer overflow vulnerability exists in ELECOM wireless LAN routers, which may allow an unauthenticated attacker to execute arbitrary code.

NVD Source

Risk Analysis

A buffer overflow vulnerability in ELECOM wireless LAN routers allows unauthenticated attackers to execute arbitrary code. This critical flaw carries a CVSS score of 9.8, reflecting the potential for full system compromise.

There is no known public exploit for this vulnerability, and it is not tracked in the CISA KEV catalog. It is remotely exploitable with low attack complexity.

Recommended Action

Upgrade the router firmware to the latest version provided by the manufacturer. Ensure the device is not exposed directly to the internet.

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-2023-39454 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.