CVE-2026-25804

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa	Patch
https://github.com/antrea-io/antrea/pull/7496	Issue Tracking Patch
https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:linuxfoundation:antrea::::::kubernetes::*
	cpe:2.3:a:linuxfoundation:antrea::::::kubernetes::*

History

28 Feb 2026, 00:30

Type	Values Removed	Values Added
First Time		Linuxfoundation Linuxfoundation antrea
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
References	~~() https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa -~~	() https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa - Patch
References	~~() https://github.com/antrea-io/antrea/pull/7496 -~~	() https://github.com/antrea-io/antrea/pull/7496 - Issue Tracking, Patch
References	~~() https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9 -~~	() https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9 - Patch, Vendor Advisory
CPE		cpe:2.3:a:linuxfoundation:antrea::::::kubernetes::*

06 Feb 2026, 23:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-06 23:15

Updated : 2026-02-28 00:30

NVD link : CVE-2026-25804

Mitre link : CVE-2026-25804

CVE.ORG link : CVE-2026-25804

JSON object : View

Products Affected

linuxfoundation

antrea

CWE

CWE-287

Improper Authentication

CWE-770

Allocation of Resources Without Limits or Throttling

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