CVE-2022-3927

criticalpriority · track · 39OT risk · elevatedEPSS 0.006 · 48 %ileEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.58% (48th) EPSS
CVSS 9.8 · critical
Is it mine?
38 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · cisa_csaf_ot

EPSS · scored 2026-10-27

The affected products store both public and private key that are used to sign and protect Custom Parameter Set (CPS) file from modification. An attacker that manages to exploit this vulnerability will be able to change the CPS file, sign it so that it is trusted as the legitimate CPS file. This issue affects * FOXMAN-UN product: FOXMAN-UN R15B, FOXMAN-UN R15A, FOXMAN-UN R14B, FOXMAN-UN R14A, FOXMAN-UN R11B, FOXMAN-UN R11A, FOXMAN-UN R10C, FOXMAN-UN R9C; * UNEM product: UNEM R15B, UNEM R15A, UNEM R14B, UNEM R14A, UNEM R11B, UNEM R11A, UNEM R10C, UNEM R9C. List of CPEs: * cpe:2.3:a:hitachienergy:foxman-un:R15B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R15A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R14B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R14A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R11B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R11A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R10C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R9C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R15B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R15A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R14B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R14A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R11B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R11A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R10C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R9C:*:*:*:*:*:*:*

01

remediations

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

A vendor fix is available.

  • FixedUNEMcisa_csaf_ot

    Hitachi Energy remediated these vulnerabilities in UNEM R16A and recommends users upgrade to this version.

  • FixedFOXMAN-UNcisa_csaf_ot

    Hitachi Energy has remediated these vulnerabilities in FOXMAN-UN R16A and recommends users upgrade to this version.

  • MitigationUNEMcisa_csaf_ot

    Avoid embedded FOXCST with RADIUS authentication.

  • MitigationFOXMAN-UNcisa_csaf_ot

    Avoid embedded FOXCST with RADIUS authentication.

02

cvss

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

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9
v3.08highCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US
v3.18highCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU
v3.18highCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · cybersecurity@hitachienergy.comexploitability 1.3 · impact 6
v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-798USprimaryCWE-321US
05

affected products (38)

Products and version ranges known to be affected.

showing 20 of 38
06

advisories (2)

Vendor and ecosystem advisories describing this.

  • ICSA-23-005-01Hitachi Energy UNEM2023-01-05icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could allow an unauthorized user to obtain sensitive information and gain access to the network elements managed by the UNEM and could cause availability issue on affected UNEM products.

  • ICSA-23-005-02Hitachi Energy FOXMAN-UN2023-01-05icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could allow an unauthorized user to obtain sensitive information and gain access to the network elements managed by the FOXMAN-UN, and could cause an availability issue on affected FOXMAN-UN products.

07

also known as (3)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otNVDCVE.orgMITRE
published 2023-01-05modified 2026-06-17
10

references (8)

External citations — patches, advisories, analysis.

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