How severe is CVE-2020-12117?

CVE-2020-12117 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-12117 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-2020-12117?

CVE-2020-12117 affects Moxa Nport 5100a Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12117?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-12117 published?

CVE-2020-12117 was published on 2020-05-01 and last updated on 2026-06-17.

CVE-2020-12117

CVE-2020-12117 is a medium-severity vulnerability in Moxa Nport 5100a Firmware with a CVSS 3.x base score of 5.3. 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-306.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Moxa Nport 5100a Firmware
Published: 2020-05-01
Last modified: 2026-06-17

Description

Moxa Service in Moxa NPort 5150A firmware version 1.5 and earlier allows attackers to obtain sensitive configuration values via a crafted packet to UDP port 4800. NOTE: Moxa Service is an unauthenticated service that runs upon a first-time installation but can be disabled without ill effect.

Frequently asked questions

What is CVE-2020-12117?: Moxa Service in Moxa NPort 5150A firmware version 1.5 and earlier allows attackers to obtain sensitive configuration values via a crafted packet to UDP port 4800. NOTE: Moxa Service is an unauthenticated service that runs upon a first-time installation but can be disabled without ill effect.
How severe is CVE-2020-12117?: CVE-2020-12117 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-12117 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-2020-12117?: CVE-2020-12117 affects Moxa Nport 5100a Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12117?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12117 published?: CVE-2020-12117 was published on 2020-05-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:moxa:nport_5100a_firmware:*:*:*:*:*:*:*:*

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