CVE-2019-16297Network attack vector

Network denial of service via unhandled host events

Published Feb 20, 2020 · Updated Aug 5, 2024

Denial of service in Open Network Operating System 1.14 allows remote attackers to disrupt control-plane processing via host events. The org.onosproject.p4tutorial host event listener handles HOST_ADDED but omits HOST_MOVED, HOST_REMOVED, and HOST_UPDATED, leaving dependent applications with stale or missing flow-management actions. Exploitation requires network delivery of host-state events in an ONOS deployment running the P4 tutorial application; the documented consequence is service interruption rather than data disclosure or code execution.

CVSS severity7.5
High
EPSS probability1.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Open Network Operating System 1.14 allows remote attackers to disrupt control-plane processing via host events. The org.onosproject.p4tutorial host event listener handles HOST_ADDED but omits HOST_MOVED, HOST_REMOVED, and HOST_UPDATED, leaving dependent applications with stale or missing flow-management actions. Exploitation requires network delivery of host-state events in an ONOS deployment running the P4 tutorial application; the documented consequence is service interruption rather than data disclosure or code execution.

The record

CVE
CVE-2019-16297
Published
Feb 20, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-755, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo