Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

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

Quick assessment

Affected
antrea-io antrea
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Antrea是antrea.io开源的一个Kubernetes网络配置软件。 Antrea 2.3.2之前版本和2.4.3之前版本存在安全漏洞，该漏洞源于网络策略优先级分配系统存在uint16算术溢出错误，可能导致流量强制执行不正确。

AI Predicted 5.9 Difficulty: Hard EPSS 0.50% · P43

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-25804

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Antrea has invalid enforcement order for network policy rules caused by integer overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Antrea 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Antrea是antrea.io开源的一个Kubernetes网络配置软件。 Antrea 2.3.2之前版本和2.4.3之前版本存在安全漏洞，该漏洞源于网络策略优先级分配系统存在uint16算术溢出错误，可能导致流量强制执行不正确。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
antrea-io antrea < 2.3.2 -

II. Public POCs for CVE-2026-25804

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-25804

请登录查看更多情报信息。

IV. Related Vulnerabilities

Same product: antrea
Same vendor: antrea-io
Same weakness: CWE-287