How severe is CVE-2023-5347?

CVE-2023-5347 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-5347 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5347?

CVE-2023-5347 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-2023-5347?

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

Does CVE-2023-5347 have an EU (EUVD) identifier?

Yes. CVE-2023-5347 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57664.

When was CVE-2023-5347 published?

CVE-2023-5347 was published on 2024-01-09 and last updated on 2026-06-17.

CVE-2023-5347

CVE-2023-5347 is a critical-severity vulnerability in Korenix Jetnet 5310g Firmware with a CVSS 3.x base score of 9.8. 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-347.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-57664
Weakness: CWE-347
Affected product: Korenix Jetnet 5310g Firmware
Published: 2024-01-09
Last modified: 2026-06-17

Description

An Improper Verification of Cryptographic Signature vulnerability in the update process of Korenix JetNet Series allows replacing the whole operating system including Trusted Executables. This issue affects JetNet devices older than firmware version 2024/01.

Frequently asked questions

What is CVE-2023-5347?: An Improper Verification of Cryptographic Signature vulnerability in the update process of Korenix JetNet Series allows replacing the whole operating system including Trusted Executables. This issue affects JetNet devices older than firmware version 2024/01.
How severe is CVE-2023-5347?: CVE-2023-5347 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-5347 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5347?: CVE-2023-5347 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-2023-5347?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2023-5347 have an EU (EUVD) identifier?: Yes. CVE-2023-5347 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57664.
When was CVE-2023-5347 published?: CVE-2023-5347 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:*:*:*:*:*:*:*

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