Vulnerability · Published Feb 6, 2026 · Assigned by GitHub_M

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

High 8.0

In plain English

A high-severity improper authentication in antrea from antrea-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.0High

Exploit odds (30 days)0.5%top 57.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	antrea.io/antrea	2.3.2	GHSA-86x4-wp9f-wrr9
Go	antrea.io/antrea	2.4.3	GHSA-86x4-wp9f-wrr9
Go	antrea.io/antrea	no fix listed	GO-2026-4461

Affected products (as reported)

Vendor	Product	Versions
antrea-io	antrea	< 2.3.2>= 2.4.0, < 2.4.3

Weakness: CWE-287, CWE-770 · Vector: 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

References

https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9 x_refsource_CONFIRM
https://github.com/antrea-io/antrea/pull/7496 x_refsource_MISC
https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186fa x_refsource_MISC