How severe is CVE-2016-1227?

CVE-2016-1227 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-1227 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1227?

CVE-2016-1227 primarily affects Ntt-east Rt-400mi Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1227?

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-2016-1227 published?

CVE-2016-1227 was published on 2016-07-03 and last updated on 2026-06-17.

CVE-2016-1227

CVE-2016-1227 is a high-severity vulnerability in Ntt-east Rt-400mi Firmware with a CVSS 3.x base score of 7.2. 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 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ntt-east Rt-400mi Firmware
Published: 2016-07-03
Last modified: 2026-06-17

Description

NTT EAST Hikari Denwa routers with firmware PR-400MI, RT-400MI, and RV-440MI 07.00.1006 and earlier and NTT WEST Hikari Denwa routers with firmware PR-400MI, RT-400MI, and RV-440MI 07.00.1005 and earlier allow remote authenticated users to execute arbitrary OS commands via unspecified vectors.

Frequently asked questions

What is CVE-2016-1227?: NTT EAST Hikari Denwa routers with firmware PR-400MI, RT-400MI, and RV-440MI 07.00.1006 and earlier and NTT WEST Hikari Denwa routers with firmware PR-400MI, RT-400MI, and RV-440MI 07.00.1005 and earlier allow remote authenticated users to execute arbitrary OS commands via unspecified vectors.
How severe is CVE-2016-1227?: CVE-2016-1227 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-1227 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1227?: CVE-2016-1227 primarily affects Ntt-east Rt-400mi Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1227?: 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-2016-1227 published?: CVE-2016-1227 was published on 2016-07-03 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:ntt-east:rt-400mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:pr-400mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rt-400mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rv-440mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-400mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rv-440mi_firmware:*:*:*:*:*:*:*:*

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