No exploitation reported

CVE-2023-27388

No exploitation reported by the sources we read.

Published2023-05-23
WeaknessCWE-287 · CWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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).

Timeline

dates in UTC

2023-05-2302:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-27388?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-27388?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Especmic rs-12n firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Especmic rt-12n firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Especmic rt-22bn firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

7 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

www.monitoring.especmic.co.jpVendor Advisory
www.tandd.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-01-17
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.19.82025-01-17
NVDCVSS 3.19.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-8632025-01-17
NVDweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-05-23
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-27388?

Is CVE-2023-27388 actively exploited?

Active exploitation of CVE-2023-27388 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

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

CVE-2023-27388 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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