How severe is CVE-2019-20030?

CVE-2019-20030 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-20030 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20030?

CVE-2019-20030 affects Nec Um8000 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20030?

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.

When was CVE-2019-20030 published?

CVE-2019-20030 was published on 2020-07-29 and last updated on 2026-06-17.

CVE-2019-20030

CVE-2019-20030 is a high-severity vulnerability in Nec Um8000 Firmware with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Nec Um8000 Firmware
Published: 2020-07-29
Last modified: 2026-06-17

Description

An attacker with knowledge of the modem access number on a NEC UM8000 voicemail system may use SSH tunneling or standard Linux utilities to gain access to the system's LAN port. All versions are affected.

Frequently asked questions

What is CVE-2019-20030?: An attacker with knowledge of the modem access number on a NEC UM8000 voicemail system may use SSH tunneling or standard Linux utilities to gain access to the system's LAN port. All versions are affected.
How severe is CVE-2019-20030?: CVE-2019-20030 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-20030 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20030?: CVE-2019-20030 affects Nec Um8000 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20030?: 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.
When was CVE-2019-20030 published?: CVE-2019-20030 was published on 2020-07-29 and last updated on 2026-06-17.

References

https://shadytel.su/files/nec_cve.txt

Affected products (1)

cpe:2.3:o:nec:um8000_firmware:*:*:*:*:*:*:*:*

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