VulnerabilityAnalyzed

CVE-2026-25804

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.

HIGH 8.0EPSS 0.46%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 4.0: 8.0 HIGHCVSS: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/M
EPSS: 0.46% probability · 39th percentile
CISA KEV: Not listed
Weakness: CWE-287, CWE-770
Affected: linuxfoundation/antrea
Source: security-advisories@github.com

References

https://github.com/antrea-io/antrea/commit/86c4b6010f3be536866f339b632621c23d7186faPatch
https://github.com/antrea-io/antrea/pull/7496Issue Tracking, Patch
https://github.com/antrea-io/antrea/security/advisories/GHSA-86x4-wp9f-wrr9Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.