High 8.0Published Feb 6, 2026

CVE-2026-25804Antrea has invalid enforcement order for network policy rules caused by integer overflow

Updated under an hour ago (Oct 27, 2026, 1:30 AM ET)

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Exploited in the last 30 days

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: 8.0 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-287, CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

antrea-io antrea antrea_io:antrea (from the name)	before 2.3.2; from 2.4.0, < 2.4.3	CNA record
linuxfoundation antrea linuxfoundation:antrea	before 2.3.2; from 2.4.0 before 2.4.3	NVD

References

References

https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9	x-refsource-confirm, patch, vendor-advisory
https://github.com/antrea-io/antrea/pull/7496	x-refsource-misc, issue-tracking, patch
https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.