CVE-2019-16300: An issue was discovered in Open Network Operating System (ONOS) 1.14

This month

HIGH 7.5REMOTEWATCHLISTMITIGATE

CVE-2019-16300 is a high-severity flaw (CVSS 7.5) affecting open network operating system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Open Network Operating System (ONOS) 1.14. In the access control application (org.onosproject.acl), the host event listener does not handle the following event types: HOST_REMOVED. In combination with other applications, this could lead to the absence of intended code execution.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-755
Published	2020-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: linuxfoundation

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

Am I affected?

Timeline

2020-02-20 22:15 UTCPublished CVE record published
2026-06-17 02:22 UTCUpdated Record last modified

linuxfoundation open network operating system MITIGATE

Affected: 1.14.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.14.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2019-16300?

open network operating system: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-16300 being exploited?

CVE-2019-16300 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-2019-16300 affect?

CVE-2019-16300 affects open network operating system. Severity is high (CVSS 7.5). An issue was discovered in Open Network Operating System (ONOS) 1.14. In the access control application (org.onosproject.acl), the host event listener does not handle the following event types: HOST_REMOVED. In combination with other applic

How urgent is CVE-2019-16300?

Priority 56/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

CVE-2019-16302 HIGH 7.5 MITIGATE An issue was discovered in Open Network Operating System (ONOS) 1.14
CVE-2019-16301 HIGH 7.5 MITIGATE An issue was discovered in Open Network Operating System (ONOS) 1.14
CVE-2019-16299 HIGH 7.5 MITIGATE An issue was discovered in Open Network Operating System (ONOS) 1.14
CVE-2019-16298 HIGH 7.5 MITIGATE An issue was discovered in Open Network Operating System (ONOS) 1.14
CVE-2019-16297 HIGH 7.5 MITIGATE An issue was discovered in Open Network Operating System (ONOS) 1.14

References

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