CVE-2026-25804

EUVD-2026-6936
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
linuxfoundationantrea
𝑥
< 2.3.2
linuxfoundationantrea
2.4.0 ≤
𝑥
< 2.4.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa
https://github.com/antrea-io/antrea/pull/7496
https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9