How severe is CVE-2023-5376?

CVE-2023-5376 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-5376 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5376?

CVE-2023-5376 primarily affects Korenix Jetnet 5310g Firmware. In total, 44 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-5376?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-5376 have an EU (EUVD) identifier?

Yes. CVE-2023-5376 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57692.

When was CVE-2023-5376 published?

CVE-2023-5376 was published on 2024-01-09 and last updated on 2026-06-17.

CVE-2023-5376

CVE-2023-5376 is a high-severity vulnerability in Korenix Jetnet 5310g Firmware with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-57692
Weakness: CWE-287
Affected product: Korenix Jetnet 5310g Firmware
Published: 2024-01-09
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2023-5376?: An Improper Authentication vulnerability in Korenix JetNet TFTP allows abuse of this service. This issue affects JetNet devices older than firmware version 2024/01.
How severe is CVE-2023-5376?: CVE-2023-5376 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-5376 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5376?: CVE-2023-5376 primarily affects Korenix Jetnet 5310g Firmware. In total, 44 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-5376?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-5376 have an EU (EUVD) identifier?: Yes. CVE-2023-5376 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57692.
When was CVE-2023-5376 published?: CVE-2023-5376 was published on 2024-01-09 and last updated on 2026-06-17.

References

Affected products (44)

cpe:2.3:o:korenix:jetnet_5310g_firmware:2.6:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508_firmware:2.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508i-w_firmware:1.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508-w_firmware:2.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508if-s_firmware:1.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508if-m_firmware:1.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508if-sw_firmware:1.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508if-mw_firmware:1.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508f-m_firmware:2.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508f-s_firmware:2.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508f-mw_firmware:2.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_4508f-sw_firmware:2.3:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_5620g-4c_firmware:1.1:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_5612gp-4f_firmware:1.2:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_5612g-4f_firmware:1.2:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_5728g-24p-ac-2dc-us_firmware:2.1:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_5728g-24p-ac-2dc-eu_firmware:2.1:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6528gf-2ac-eu_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6528gf-2ac-us_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6528gf-2dc24_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6528gf-2dc48_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6528gf-ac-eu_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6528gf-ac-us_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6628xp-4f-us_firmware:1.1:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6628x-4f-eu_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6728g-24p-ac-2dc-us_firmware:1.1:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6728g-24p-ac-2dc-eu_firmware:1.1:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-2dc48_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-2dc24_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-ac-dc24-us_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-2ac-us_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-ac-us_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-2ac-au_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-ac-dc24-eu_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6828gf-2ac-eu_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_6910g-m12_hvdc_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_7310g-v2_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_7628xp-4f-us_firmware:1.0:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_7628xp-4f-us_firmware:1.1:*:*:*:*:*:*:*
cpe:2.3:o:korenix:jetnet_7628xp-4f-eu_firmware:1.0:*:*:*:*:*:*:*

More vulnerabilities in Korenix Jetnet 5310g Firmware

CVE-2023-5347 — Critical (CVSS 9.8): An Improper Verification of Cryptographic Signature vulnerability in the update process of Korenix JetNet Series allows…

All CVEs affecting Korenix Jetnet 5310g Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →