CVE-2019-11189Public exploitNetwork attack vector

Network access bypass via gratuitous ARP spoofing

Published Feb 20, 2020 · Updated Aug 4, 2024

Authentication bypass in ONOS 2.0 and earlier allows remote attackers to evade network access controls through data-plane packet injection. A gratuitous ARP reply makes the host mobility application remove existing ACL flow-denial rules, while the access control application fails to reinstall them. Remote attackers must be able to inject the reply into the managed data plane; the resulting rule removal permits traffic that the ACL policy intended to deny.

CVSS severity7.5
High
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in ONOS 2.0 and earlier allows remote attackers to evade network access controls through data-plane packet injection. A gratuitous ARP reply makes the host mobility application remove existing ACL flow-denial rules, while the access control application fails to reinstall them. Remote attackers must be able to inject the reply into the managed data plane; the resulting rule removal permits traffic that the ACL policy intended to deny.

The record

CVE
CVE-2019-11189
Published
Feb 20, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-290, T1562.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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

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

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 exploitPublished

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1562.004Disable or Modify System Firewall

Public exploit references

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

Technologies

Your stack

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Your stack

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