CVE-2026-25804

CRITICAL

9.1

Description

Antrea is a Kubernetes networking solution intended to be Kubernetes native. Prior to versions 2.3.2 and 2.4.3, Antrea's network policy priority assignment system has a uint16 arithmetic overflow bug that causes incorrect OpenFlow priority calculations when handling a large numbers of policies with various priority values. This results in potentially incorrect traffic enforcement. This issue has been patched in versions 2.4.3.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/6/2026

Last Modified2/28/2026

Sourcenvd

Honeypot Sightings0

Affected Products

linuxfoundation:antrea

Weaknesses (CWE)

CWE-287CWE-770

References

https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa(security-advisories@github.com)

https://github.com/antrea-io/antrea/pull/7496(security-advisories@github.com)

https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9(security-advisories@github.com)

IOC Correlations

No correlations recorded

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