CVE-2025-8283Network attack vector

Container data disclosure via DNS search-domain collision

Published Jul 28, 2025 · Updated Sep 1, 2026

DNS resolution confusion in Containers Netavark before 1.15.1 allows remote attackers to receive container traffic via hostname collisions. The bridge driver omits dns.podman from response.dns_search_domains, so container resolvers consult host search domains for matching hostnames. Exploitation requires control of a configured search domain plus knowledge of container names and connections; successful TLS validation blocks mismatched endpoints.

CVSS severity3.7
Low
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DNS resolution confusion in Containers Netavark before 1.15.1 allows remote attackers to receive container traffic via hostname collisions. The bridge driver omits dns.podman from response.dns_search_domains, so container resolvers consult host search domains for matching hostnames. Exploitation requires control of a configured search domain plus knowledge of container names and connections; successful TLS validation blocks mismatched endpoints.

The record

CVE
CVE-2025-8283
Published
Jul 28, 2025
Updated
Sep 1, 2026
Vendor
Containers
Product
Netavark
Classifications
CWE-15, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 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 <1.15.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Containers · Netavarkversion=0 <1.15.1
389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift Container Platform 4Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

3.7Red HatCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/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-15External Control of System or Configuration Setting
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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