CVE-2024-28021

highpriority · track · 30EPSS 0.003 · 19 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.27% (19th) EPSS

CVSS 7.4 · high

Is it mine?

26 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

A vulnerability exists in the FOXMAN-UN/UNEM server that affects the message queueing mechanism’s certificate validation. If exploited an attacker could spoof a trusted entity causing a loss of confidentiality and integrity.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedFOXMAN-UN R15B PC4cisa_csaf_ot
Update to FOXMAN-UN R15B PC5 (under development) and apply general mitigation factors.
FixedFOXMAN-UN R16B PC2cisa_csaf_ot
Fixed in FOXMAN-UN R16B PC3 Recommended to update to FOXMAN-UN R16B PC4 and apply general mitigation factors.
FixedUNEM R15B PC4cisa_csaf_ot
Update to UNEM R15B PC5 (under development) and apply general mitigation factors.
FixedUNEM R16B PC2cisa_csaf_ot
Fixed in UNEM R16B PC3 Recommended to update to UNEM R16B PC4 and apply general mitigation factors.
No fix plannedFOXMAN-UN R15Acisa_csaf_ot
EOL versions - no remediation will be available. Recommended to update to UNEM R16B PC4 or R15B PC5 (update planned) and apply general mitigation factors.
No fix plannedFOXMAN-UN R16Acisa_csaf_ot
EOL versions - no remediation will be available. Recommended to update to UNEM R16B PC4 or R15B PC5 (update planned) and apply general mitigation factors.
No fix plannedFOXMAN-UN older than R15Acisa_csaf_ot
EOL versions - no remediation will be available. Recommended to update to UNEM R16B PC4 or R15B PC5 (update planned) and apply general mitigation factors.
No fix plannedUNEM R15Acisa_csaf_ot
EOL versions - no remediation will be available. Recommended to update to UNEM R16B PC4 or R15B PC5 (update planned) and apply general mitigation factors.
No fix plannedUNEM R16Acisa_csaf_ot
EOL versions - no remediation will be available. Recommended to update to UNEM R16B PC4 or R15B PC5 (update planned) and apply general mitigation factors.
No fix plannedUNEM older than R15Acisa_csaf_ot
EOL versions - no remediation will be available. Recommended to update to UNEM R16B PC4 or R15B PC5 (update planned) and apply general mitigation factors.

cvss

Technical severity, 0–10. One row per scoring source.

7.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.4

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 5.2

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · CISA US

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · cybersecurity@hitachienergy.comexploitability 2.2 · impact 5.2

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-295USprimaryCWE-295US

affected products (26)

Products and version ranges known to be affected.

FOXMAN-UN R15Aall versionscisa_csaf_otUS
FOXMAN-UN R15B PC4all versionscisa_csaf_otUS
FOXMAN-UN R15B PC5all versionsfixedcisa_csaf_otUS
FOXMAN-UN R16Aall versionscisa_csaf_otUS
FOXMAN-UN R16B PC2all versionscisa_csaf_otUS
FOXMAN-UN R16B PC3all versionsfixedcisa_csaf_otUS
FOXMAN-UN older than R15Aall versionscisa_csaf_otUS
Hitachi Energy FOXMAN-UN R15Aall versionscisa_csaf_otUS
Hitachi Energy FOXMAN-UN R15B PC4all versionscisa_csaf_otUS
Hitachi Energy FOXMAN-UN R15B PC5all versionsfixedcisa_csaf_otUS
Hitachi Energy FOXMAN-UN R16Aall versionscisa_csaf_otUS
Hitachi Energy FOXMAN-UN R16B PC2all versionscisa_csaf_otUS
Hitachi Energy FOXMAN-UN R16B PC3all versionsfixedcisa_csaf_otUS
Hitachi Energy FOXMAN-UN older than R15A< R15Acisa_csaf_otUS
Hitachi Energy FOXMAN-UN≤ FOXMAN-UN R15B PC4enisa_euvdEU
Hitachi Energy FOXMAN-UN≤ FOXMAN-UN R16B PC2enisa_euvdEU
Hitachi Energy UNEM≤ UNEM R15B PC4enisa_euvdEU
Hitachi Energy UNEM≤ UNEM R16B PC2enisa_euvdEU
hitachienergy foxman un= r15anvdUScpe:2.3:a:hitachienergy:foxman_un:*:*:*:*:*:*:*:*
hitachienergy foxman un= r16anvdUScpe:2.3:a:hitachienergy:foxman_un:*:*:*:*:*:*:*:*

showing 20 of 26

advisories (2)

Vendor and ecosystem advisories describing this.

ICSA-25-014-01Hitachi Energy FOXMAN-UN2024-06-11icsa · cisa_csaf_otUS
Hitachi Energy is aware of multiple internal reported vulnerabilities that affects the FOXMAN-UN versions listed below. Please refer to the “Recommended Immediate Actions” for information about the remediation.
ICSA-25-030-01Hitachi Energy UNEM2024-06-11icsa · cisa_csaf_otUS
Hitachi Energy is aware of multiple internal reported vulnerabilities that affects the UNEM versions listed below. Please refer to the “Recommended Immediate Actions” for information about the remediation.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2024-06-11modified 2026-06-17

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+1889 more

references (8)

External citations — patches, advisories, analysis.

scry

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