Cyber Resilience

CVE-2023-5376

HighPublic PoC

Published: 09 January 2024

Published
09 January 2024
Modified
08 October 2025
KEV Added
Patch
CVSS Score v3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
EPSS Score 0.0027 51.0th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-5376 is a high-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Korenix Jetnet 7628Xp-4F-Us Firmware. Its CVSS base score is 8.6 (High).

Operationally, ranked in the top 49.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An Improper Authentication vulnerability in Korenix JetNet TFTP allows abuse of this service. This issue affects JetNet devices older than firmware version 2024/01.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

korenix
jetnet 5310g firmware
2.6
korenix
jetnet 4508 firmware
2.3
korenix
jetnet 4508i-w firmware
1.3
korenix
jetnet 4508-w firmware
2.3
korenix
jetnet 4508if-s firmware
1.3
korenix
jetnet 4508if-m firmware
1.3
korenix
jetnet 4508if-sw firmware
1.3
korenix
jetnet 4508if-mw firmware
1.3
korenix
jetnet 4508f-m firmware
2.3
korenix
jetnet 4508f-s firmware
2.3
+32 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-287 CWE-306

Session content review can reveal authentication bypasses or failures in session establishment.

addresses: CWE-287 CWE-306

Assessments check authentication mechanisms for correct implementation and effectiveness, reducing successful authentication bypass attempts.

addresses: CWE-287 CWE-306

Documented IA policy and procedures require proper authentication mechanisms to be defined and followed, reducing improper authentication.

addresses: CWE-287 CWE-306

Requires adaptive authentication under specific conditions, directly strengthening authentication mechanisms against improper or insufficient authentication.

addresses: CWE-287 CWE-306

Identity providers centralize and enforce authentication mechanisms, reducing improper authentication.

addresses: CWE-287 CWE-306

Requires unique identification and authentication of organizational users, directly preventing improper authentication.

addresses: CWE-287 CWE-306

Enforces unique device identification and authentication before any connection is established, directly mitigating improper authentication weaknesses.

addresses: CWE-287 CWE-306

Directly requires implementation of compliant authentication mechanisms to cryptographic modules, preventing improper authentication.

References