HOMEVULNERABILITIESCVE-2016-1227
HIGH

CVE-2016-1227

NVD-CWE-noinfoPublished: July 3, 2016· Updated: Jun 17, 2026

7.2
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2016-1227 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

ntt-east6 product(s)
rt-400mi firmwarert-400mipr-400mi firmwarepr-400mirv-440mi firmwarerv-440mi
ntt-west6 product(s)
pr-400mi firmwarepr-400mirt-400mirt-400mi firmwarerv-440mi firmwarerv-440mi
Source: NVD CPE · 12 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://jvn.jp/en/jp/JVN77403442/index.html
ADVISORYhttp://jvndb.jvn.jp/jvndb/JVNDB-2016-000105
ADVISORYhttp://web116.jp/ced/support/news/contents/2016/20160627.html
ADVISORYhttp://www.ntt-west.co.jp/kiki/support/flets/hgw4_mi/160627.html
ADVISORYhttp://jvn.jp/en/jp/JVN77403442/index.html
ADVISORYhttp://jvndb.jvn.jp/jvndb/JVNDB-2016-000105
ADVISORYhttp://web116.jp/ced/support/news/contents/2016/20160627.html
ADVISORYhttp://www.ntt-west.co.jp/kiki/support/flets/hgw4_mi/160627.html

All References (8)

→
http://jvn.jp/en/jp/JVN77403442/index.htmlVendor Advisory
→
http://jvndb.jvn.jp/jvndb/JVNDB-2016-000105Third Party Advisory · VDB Entry · Vendor Advisory
→
http://web116.jp/ced/support/news/contents/2016/20160627.htmlVendor Advisory
→
http://www.ntt-west.co.jp/kiki/support/flets/hgw4_mi/160627.htmlVendor Advisory
→
http://jvn.jp/en/jp/JVN77403442/index.htmlVendor Advisory
→
http://jvndb.jvn.jp/jvndb/JVNDB-2016-000105Third Party Advisory · VDB Entry · Vendor Advisory
→
http://web116.jp/ced/support/news/contents/2016/20160627.htmlVendor Advisory
→
http://www.ntt-west.co.jp/kiki/support/flets/hgw4_mi/160627.htmlVendor Advisory

Quick Facts

CVE IDCVE-2016-1227
CVSS Score7.2 / 10
SeverityHIGH
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected2 vendor(s)
PublishedJul 3, 2016

Related CVEs (NVD-CWE-noinfo)

CVE-2015-4805
10.0
CVE-2015-4835
10.0
CVE-2015-5569
10.0
CVE-2015-2608
10.0
CVE-2015-4798
10.0
CVE-2015-4839
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-1227 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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