Is CVE-2023-27388 actively exploited?

No active exploitation of CVE-2023-27388 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-27388 be exploited remotely?

Yes. CVE-2023-27388 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-27388?

CVE-2023-27388 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-27388

CWE-287Published: May 23, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper authentication vulnerability in T&D Corporation and ESPEC MIC CORP. data logger products allows a remote unauthenticated attacker to login to the product as a registered user. Affected products and versions are as follows: T&D Corporation data logger products (TR-71W/72W all firmware versions, RTR-5W all firmware versions, WDR-7 all firmware versions, WDR-3 all firmware versions, and WS-2 all firmware versions), and ESPEC MIC CORP. data logger products (RT-12N/RS-12N all firmware versions, RT-22BN all firmware versions, and TEU-12N all firmware versions).

NVD Source

Risk Analysis

Various T&D Corporation and ESPEC MIC CORP. data loggers are vulnerable to improper authentication, allowing remote unauthenticated attackers to log in as registered users. This critical flaw grants unauthorized access to sensitive device controls.

No public exploit is known, but the vulnerability is remotely exploitable with low complexity.

Recommended Action

Check the manufacturer's website for firmware updates. If no update is available, isolate the device from the public internet using a firewall.

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-2023-27388 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-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.