CVE-2023-28842Network attack vector

Ethernet frame injection via delayed firewall rules

Published Apr 4, 2023 · Updated Feb 13, 2025

Network access-control failure in Moby 1.12.0 through 20.10.23 and 23.0.0 through 23.0.2 allows remote attackers to inject Ethernet frames. The overlay driver delays creation of Linux iptables rules that reject cleartext VXLAN packets until a peer joins, so a one-endpoint encrypted network accepts unauthenticated datagrams bearing its VNI. Exploitation requires network reachability to the VXLAN port and an off-by-default encrypted overlay with only one attached endpoint; injected frames can alter traffic within that overlay.

CVSS severity6.8
Medium
EPSS probability1.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Network access-control failure in Moby 1.12.0 through 20.10.23 and 23.0.0 through 23.0.2 allows remote attackers to inject Ethernet frames. The overlay driver delays creation of Linux iptables rules that reject cleartext VXLAN packets until a peer joins, so a one-endpoint encrypted network accepts unauthenticated datagrams bearing its VNI. Exploitation requires network reachability to the VXLAN port and an off-by-default encrypted overlay with only one attached endpoint; injected frames can alter traffic within that overlay.

The record

CVE
CVE-2023-28842
Published
Apr 4, 2023
Updated
Feb 13, 2025
Vendor
Moby Project
Product
Moby
Classifications
CWE-636, CWE-420, T1659
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.12.0, < 20.10.24
  2. Affected versionversion=>= 23.0.0, < 23.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Moby Project · Mobyversion=>= 1.12.0, < 20.10.24; version=>= 23.0.0, < 23.0.3

Published CVSS scores

6.8GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
6.8NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/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 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-636Not Failing Securely ('Failing Open')
CWE-420Unprotected Alternate Channel
T1659Content Injection

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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