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Fencer Vulns
high 7.4

CVE-2024-28021 json

A vulnerability exists in the FOXMAN-UN/UNEM server that affects the message queueing mechanism’s certificate validation.

published 2024-06-11 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-25195

cvss
7.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

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.

Patch / fix

  • Hitachi Energy FOXMAN-UN FOXMAN-UN R15B PC5, FOXMAN-UN R16B PC3
  • Hitachi Energy UNEM UNEM R15B PC5, UNEM R16B PC3

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-014-01 updated cvss 7.4

Hitachi Energy FOXMAN-UN

  • Hitachi Energy FOXMAN-UN R16B_PC2, R15B_PC4, R16A, R15A
    affected: vendor fix, no fix planned
  • Hitachi Energy FOXMAN-UN R16B_PC3, R15B_PC5
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-25-030-01 updated cvss 8.0

Hitachi Energy UNEM

  • Hitachi Energy UNEM R16B_PC2, R15B_PC4, R16A, R15A
    affected: vendor fix, no fix planned
  • Hitachi Energy UNEM R16B_PC3, R15B_PC5
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

  • Hitachi Energy FOXMAN-UN
  • Hitachi Energy UNEM
  • hitachienergy unem
  • hitachienergy foxman-un

Classification

Weakness
  • CWE-295 Improper Certificate Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.