CVE-2023-41591Network attack vector

Traffic interception via controller-port PACKET_OUT host spoofing

Published May 29, 2025 · Updated May 29, 2025

Host spoofing in Open Network Foundation ONOS 2.7.0 allows context-dependent attackers to redirect traffic via a crafted PACKET_OUT message. HostManager accepts a PACKET_OUT whose egress port is 255, the default BMv2 controller port, and creates attacker-chosen IP and MAC host identities. The attacker must be able to inject the crafted control message; successful spoofing enables interception between fake and legitimate hosts.

CVSS severity9.8
Critical
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Host spoofing in Open Network Foundation ONOS 2.7.0 allows context-dependent attackers to redirect traffic via a crafted PACKET_OUT message. HostManager accepts a PACKET_OUT whose egress port is 255, the default BMv2 controller port, and creates attacker-chosen IP and MAC host identities. The attacker must be able to inject the crafted control message; successful spoofing enables interception between fake and legitimate hosts.

The record

CVE
CVE-2023-41591
Published
May 29, 2025
Updated
May 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-290, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 29, 2025CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record 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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1557Adversary-in-the-Middle

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

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Your stack

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