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CVE-2023-5376

Korenix Jetnet 7628xp-4f-eu Firmware authentication bypass

8.6 HIGHPublic exploitEPSS 1.41%
  1. Published9 Jan 2024

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Affected products

Korenix Jetnet 4508 Firmware2.3
Korenix Jetnet 4508f-m Firmware2.3
Korenix Jetnet 4508f-mw Firmware2.3
Korenix Jetnet 4508f-s Firmware2.3
Korenix Jetnet 4508f-sw Firmware2.3
Korenix Jetnet 4508if-m Firmware1.3
Korenix Jetnet 4508if-mw Firmware1.3
Korenix Jetnet 4508if-s Firmware1.3
Korenix Jetnet 4508if-sw Firmware1.3
Korenix Jetnet 4508i-w Firmware1.3
Korenix Jetnet 4508-w Firmware2.3
Korenix Jetnet 5310g Firmware2.6
Korenix Jetnet 5612g-4f Firmware1.2
Korenix Jetnet 5612gp-4f Firmware1.2
Korenix Jetnet 5620g-4c Firmware1.1
Korenix Jetnet 5728g-24p-ac-2dc-eu Firmware2.1
Korenix Jetnet 5728g-24p-ac-2dc-us Firmware2.1
Korenix Jetnet 6528gf-2ac-eu Firmware1.0
Korenix Jetnet 6528gf-2ac-us Firmware1.0
Korenix Jetnet 6528gf-2dc24 Firmware1.0
Korenix Jetnet 6528gf-2dc48 Firmware1.0
Korenix Jetnet 6528gf-ac-eu Firmware1.0
Korenix Jetnet 6528gf-ac-us Firmware1.0
Korenix Jetnet 6628x-4f-eu Firmware1.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-5376 being actively exploited?

CVE-2023-5376 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.41%.

How severe is CVE-2023-5376?

CVE-2023-5376 has a CVSS 3.1 base score of 8.6, rated high. EPSS estimates a 1.41% probability of exploitation.

Which products are affected by CVE-2023-5376?

Affected products include Korenix Jetnet 4508 Firmware, Korenix Jetnet 4508f-m Firmware, Korenix Jetnet 4508f-mw Firmware, Korenix Jetnet 4508f-s Firmware, Korenix Jetnet 4508f-sw Firmware, and 19 more.

How do I fix CVE-2023-5376?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-5376 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.