An authentication bypass vulnerability exists in the FOXMAN-UN/UNEM server / API Gateway component that if exploited allows attackers withou
An authentication bypass vulnerability exists in the FOXMAN-UN/UNEM server / API Gateway component that if exploited allows attackers without any access to interact with the services and the post-authentication attack surface.
- Published
- Jun 11, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.7% · 50th percentile
- CWE
- CWE-288
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Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.7%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 10.0
- CNA · Hitachi Energy
- 10.0
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| hitachienergy | foxman-un | cpe:2.3:a:hitachienergy:foxman-un |
| hitachienergy | unem | cpe:2.3:a:hitachienergy:unem |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- hitachienergy foxman-unr15a
- hitachienergy foxman-unr15b
- hitachienergy foxman-unr16a
- hitachienergy foxman-unr16b
- hitachienergy unemr15a
- hitachienergy unemr15b
- hitachienergy unemr16b
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Hitachi Energy). Independent of NVD's CPE analysis and usually ahead of it.
Hitachi Energy FOXMAN-UN
- FOXMAN-UN R15B PC5not affected
- FOXMAN-UN R16B PC2, FOXMAN-UN R15B PC4, FOXMAN-UN R16A, FOXMAN-UN R15Aaffected
- FOXMAN-UN R16B PC3 and later · up to and including FOXMAN-UN R16B PC4not affected
Hitachi Energy UNEM
- UNEM R16B PC2, UNEM R15B PC4, UNEM R15B PC5, UNEM R16B, UNEM R15Aaffected
- UNEM R16B PC3 and later · up to and including UNEM R16B PC4not affected
Same product
hitachienergy: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-2012vulnerability exists in the FOXMAN-UN/UNEM server / API Gateway that if exploited an attacker could use to allow unintended commands or
cod39Monitor
- CVE-2024-2011A heap-based buffer overflow vulnerability exists in the FOXMAN-UN/UNEM that
if exploited will generally lead to a denial of service but can39Monitor
- CVE-2022-3929Communication between the client and server partially using CORBA over TCP/IP39Monitor
- CVE-2022-3927The affected products store public and private key that are used to sign and protect custom parameter set files from modification.39Monitor
- CVE-2021-40342Use of default key for encryption39Monitor
- CVE-2024-28020A user/password reuse vulnerability exists in the FOXMAN-UN/UNEM application
and server management.32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2024-20120 days apartvulnerability exists in the FOXMAN-UN/UNEM server / API Gateway that if exploited an attacker could use to allow unintended commands or
cod39Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-288 · Authentication Bypass Using an Alternate Path or ChannelCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.