Vulnerability record · CVE-2026-25804 · published 6 February 2026

CVE-2026-25804: Linuxfoundation antrea improper authentication vulnerability

Linuxfoundation · Antrea

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.

8.0 CVSS 4.0 High EPSS 0.59% · top 53.7% CWE-287 · Improper authenticationCWE-770 · Allocation without limits

8.0CVSS 4.0 base score

0.59%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Antrea Linuxfoundation

References

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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-25804), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.