CVE-2021-27414Network attack vector

Credential theft via login-page impersonation

Published Mar 11, 2022 · Updated Apr 16, 2025

UI misrepresentation in Hitachi Energy Ellipse EAM 9.0.25 and earlier allows remote attackers to steal credentials via a malicious login page. Public advisories do not identify the UI control, page handler, or rendering operation that allows the counterfeit site to impersonate an Ellipse login page. Exploitation requires a user to visit the attacker-controlled page and submit authentication credentials, exposing those credentials to the attacker.

CVSS severity5.5
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI misrepresentation in Hitachi Energy Ellipse EAM 9.0.25 and earlier allows remote attackers to steal credentials via a malicious login page. Public advisories do not identify the UI control, page handler, or rendering operation that allows the counterfeit site to impersonate an Ellipse login page. Exploitation requires a user to visit the attacker-controlled page and submit authentication credentials, exposing those credentials to the attacker.

The record

CVE
CVE-2021-27414
Published
Mar 11, 2022
Updated
Apr 16, 2025
Vendor
Hitachi Energy
Product
Ellipse EAM
Classifications
CWE-1021, CWE-451, T1056
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=9.0.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hitachi Energy · Ellipse EAMversion=unspecified <=9.0.25

Published CVSS scores

5.5ICS-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames
CWE-451User Interface (UI) Misrepresentation of Critical Information
T1056Input Capture

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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