CVE-2019-16298Network attack vector

Service interruption via ignored host lifecycle events

Published Feb 20, 2020 · Updated Aug 5, 2024

Improper host-event handling in Open Network Operating System 1.14 allows remote attackers to interrupt private-host connectivity. The org.onosproject.virtualbng host listener processes HOST_ADDED but ignores HOST_MOVED, HOST_UPDATED, and HOST_REMOVED, leaving gateway state and installed intents stale. Exposure requires virtualbng, interacting host-management applications, and access to the managed data plane; affected flows can remain incorrect or absent and interrupt service.

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

What happened

Improper host-event handling in Open Network Operating System 1.14 allows remote attackers to interrupt private-host connectivity. The org.onosproject.virtualbng host listener processes HOST_ADDED but ignores HOST_MOVED, HOST_UPDATED, and HOST_REMOVED, leaving gateway state and installed intents stale. Exposure requires virtualbng, interacting host-management applications, and access to the managed data plane; affected flows can remain incorrect or absent and interrupt service.

The record

CVE
CVE-2019-16298
Published
Feb 20, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-755, T1499.004
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

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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

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NIST NVDCVSS: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
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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