CVE-2018-16144: The test connection functionality in the NetAudit section of Opsview Monitor before 5.3.1 and 5.4.x before 5.4

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CRITICAL 9.8REMOTEUPGRADE

CVE-2018-16144 is a critical-severity flaw (CVSS 9.8) affecting opsview. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The test connection functionality in the NetAudit section of Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is vulnerable to command injection due to improper sanitization of the rancid_password parameter.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference
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	32.7% (top 2%)
CISA exploited list	No
Weakness	CWE-78
Published	2018-09-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opsview

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

Am I affected?

Timeline

2018-09-05 21:29 UTCPublished CVE record published
2026-06-17 01:43 UTCUpdated Record last modified

opsview opsview UPGRADE

Affected: < 5.3.1 · >= 5.4.0 and < 5.4.2

Fixed in: 5.3.1, 5.4.2

Safe to downgrade to: a release before 5.4.0

1. Check installed version

apt-cache policy opsview || rpm -q opsview || opsview --version

2. UPGRADE to 5.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade opsview

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade opsview

Note

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

3. If no update is available yet, DOWNGRADE to a release before 5.4.0 (Debian / Ubuntu)

apt-cache madison opsview sudo apt install opsview=<VERSION_BEFORE_5.4.0> sudo apt-mark hold opsview

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list opsview sudo dnf downgrade opsview-<VERSION_BEFORE_5.4.0> sudo dnf versionlock add opsview

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2018-16144?

opsview: upgrade to 5.3.1, 5.4.2. Exact commands for each OS are on this page.

Is CVE-2018-16144 being exploited?

CVE-2018-16144 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-2018-16144 affect?

CVE-2018-16144 affects opsview. Severity is critical (CVSS 9.8). The test connection functionality in the NetAudit section of Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is vulnerable to command injection due to improper sanitization of the rancid_password parameter.

How urgent is CVE-2018-16144?

Priority 69/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

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References

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