Critical severity · published Feb 6, 2026
CVE-2026-25804
Antrea has invalid enforcement order for network policy rules caused by integer overflow
9.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AN
antrea · antrea-io
< 2.3.2; >= 2.4.0, < 2.4.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25804
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25804
Patch
https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa
Issue Tracking
https://github.com/antrea-io/antrea/pull/7496
Patch
https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9
More from antrea
7.5
CVE-2026-34992
Missing Encryption of Sensitive Data in antrea.io/antrea