CVE-2021-40338Network attack vector

Filesystem path disclosure via enabled debug mode

Published Jan 28, 2022 · Updated Sep 16, 2024

Information disclosure in Hitachi Energy LinkOne 3.20 and 3.22 through 3.26 allows remote attackers to read filesystem paths. A web-server misconfiguration leaves debug mode enabled, so errors generated during query operations return full filesystem directory paths. No authentication or user interaction is required, and the disclosed paths provide reconnaissance rather than file contents or modification.

CVSS severity3.7
Low
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Hitachi Energy LinkOne 3.20 and 3.22 through 3.26 allows remote attackers to read filesystem paths. A web-server misconfiguration leaves debug mode enabled, so errors generated during query operations return full filesystem directory paths. No authentication or user interaction is required, and the disclosed paths provide reconnaissance rather than file contents or modification.

The record

CVE
CVE-2021-40338
Published
Jan 28, 2022
Updated
Sep 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-209, T1592
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.7Hitachi EnergyCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
T1592Gather Victim Host Information

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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