CVE-2026-92543Network attack vectorHinoki check available

Registry credential theft via mixed-address DNS answers

Published Oct 7, 2026 · Updated Oct 7, 2026

Improper registry TLS validation in Docker Engine before 29.8.2 and Moby before 2.0.0-beta.25 allows remote attackers to steal registry credentials. loadInsecureRegistries() trusts loopback ranges by default, and isCIDRMatch accepts any loopback DNS answer even though the transport dials the hostname again. An attacker must influence DNS for a registry the daemon contacts; the insecure connection can expose registry credentials or substitute image manifests and layers.

CVSS severity7.6
High
EPSS probability0.09%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper registry TLS validation in Docker Engine before 29.8.2 and Moby before 2.0.0-beta.25 allows remote attackers to steal registry credentials. loadInsecureRegistries() trusts loopback ranges by default, and isCIDRMatch accepts any loopback DNS answer even though the transport dials the hostname again. An attacker must influence DNS for a registry the daemon contacts; the insecure connection can expose registry credentials or substitute image manifests and layers.

The record

CVE
CVE-2026-92543
Published
Oct 7, 2026
Updated
Oct 7, 2026
Vendor
Moby Project
Product
Moby
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2026Record 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=0 <v2.0.0-beta.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Moby Project · Mobyversion=0 <v2.0.0-beta.25
Docker · Docker Engineversion=0 <29.8.2

Published CVSS scores

7.6Moby ProjectCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA: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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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Technologies

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