CVE-2024-28020Network attack vector

Cross-service access via reused privileged credentials

Published Jun 11, 2024 · Updated Oct 29, 2024

Credential reuse in Hitachi Energy FOXMAN-UN and UNEM R15A through R16B allows remote authenticated users to extend access across services. Application and server management reuse nemadm login information, leaving the same credentials accepted for SSH and other services. Exploitation requires high privileges and complex routines, but successful reuse expands access beyond the originally authorized service.

CVSS severity8.0
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential reuse in Hitachi Energy FOXMAN-UN and UNEM R15A through R16B allows remote authenticated users to extend access across services. Application and server management reuse nemadm login information, leaving the same credentials accepted for SSH and other services. Exploitation requires high privileges and complex routines, but successful reuse expands access beyond the originally authorized service.

The record

CVE
CVE-2024-28020
Published
Jun 11, 2024
Updated
Oct 29, 2024
Vendor
Hitachi Energy
Product
FOXMAN-UN
Classifications
CWE-286, T1078
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 29, 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?

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

  1. Affected versionversion=FOXMAN-UN R15A
  2. Affected versionversion=FOXMAN-UN R15B
  3. Affected versionversion=FOXMAN-UN R16A
  4. Affected versionversion=FOXMAN-UN R16B
  5. Affected versionversion=r15a
  6. Affected versionversion=r15b
  7. Affected versionversion=r16a
  8. Affected versionversion=r16b

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Hitachi Energy · FOXMAN-UNversion=FOXMAN-UN R15A; version=FOXMAN-UN R15B; version=FOXMAN-UN R16A; version=FOXMAN-UN R16B; version=r15a; version=r15b; version=r16a; version=r16b
Hitachi Energy · UNEMversion=r15a; version=r15b; version=r16a; version=r16b; version=UNEM R15A; version=UNEM R15B; version=UNEM R16A; version=UNEM R16B

Published CVSS scores

8.0Hitachi EnergyCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-286Incorrect User Management
T1078Valid Accounts

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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