CVE-2018-0669: INplc-RT 3.08 and earlier allows remote attackers to bypass authentication to execute an arbitrary command thr

Q: How do I fix CVE-2018-0669?

inplc-rt: upgrade to newer than 3.08. Exact commands for each OS are on this page.

Q: Is CVE-2018-0669 being exploited?

CVE-2018-0669 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-0669 affect?

CVE-2018-0669 affects inplc-rt. Severity is critical (CVSS 9.8). INplc-RT 3.08 and earlier allows remote attackers to bypass authentication to execute an arbitrary command through the protocol-compliant traffic. This is a different vulnerability than CVE-2018-0670.

Q: How urgent is CVE-2018-0669?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-0669 is a critical-severity flaw (CVSS 9.8) affecting inplc-rt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

INplc-RT 3.08 and earlier allows remote attackers to bypass authentication to execute an arbitrary command through the protocol-compliant traffic. This is a different vulnerability than CVE-2018-0670.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-287
Published	2019-01-09
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: mnc

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-01-09 23:29 UTCPublished CVE record published
2026-06-17 01:31 UTCUpdated Record last modified

mnc inplc-rt UPGRADE

Affected: <= 3.08

Fixed in: newer than 3.08

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy inplc-rt || rpm -q inplc-rt || inplc-rt --version

2. UPGRADE to newer than 3.08 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade inplc-rt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade inplc-rt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-0669?

inplc-rt: upgrade to newer than 3.08. Exact commands for each OS are on this page.

Is CVE-2018-0669 being exploited?

CVE-2018-0669 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-0669 affect?

CVE-2018-0669 affects inplc-rt. Severity is critical (CVSS 9.8). INplc-RT 3.08 and earlier allows remote attackers to bypass authentication to execute an arbitrary command through the protocol-compliant traffic. This is a different vulnerability than CVE-2018-0670.

How urgent is CVE-2018-0669?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-0671 MEDIUM 6.7 UPGRADE Privilege escalation vulnerability in INplc-RT 3.08 and earlier allows an attacker with administrator rights t
CVE-2018-0670 CRITICAL 9.8 UPGRADE INplc-RT 3.08 and earlier allows remote attackers to bypass authentication to execute an arbitrary command thr
CVE-2018-0668 CRITICAL 9.8 UPGRADE Buffer overflow in INplc-RT 3.08 and earlier allows remote attackers to cause denial-of-service (DoS) conditio

References

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