antrea-io antrea up to 2.3.1/2.4.2 Priority improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability was found in antrea-io antrea up to 2.3.1/2.4.2. It has been rated as critical. Affected is an unknown function. This manipulation of the argument Priority causes improper authentication. This vulnerability is tracked as CVE-2026-25804. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in antrea-io antrea up to 2.3.1/2.4.2. Affected by this vulnerability is an unknown function. The manipulation of the argument priority with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-25804 since 02/05/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.3.2 or 2.4.3 eliminates this vulnerability. Applying the patch 86c4b6010f3be536866f339b632621c23d7186fa is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: antrea 2.3.2/2.4.3
Patch: 86c4b6010f3be536866f339b632621c23d7186fa

Timelineinfo

02/05/2026 CVE reserved
02/07/2026 +2 days Advisory disclosed
02/07/2026 +0 days VulDB entry created
02/28/2026 +21 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-86x4-wp9f-wrr9
Status: Confirmed

CVE: CVE-2026-25804 (🔒)
GCVE (CVE): GCVE-0-2026-25804
GCVE (VulDB): GCVE-100-344827

Entryinfo

Created: 02/07/2026 08:40
Updated: 02/28/2026 01:57
Changes: 02/07/2026 08:40 (71), 02/07/2026 10:49 (1), 02/28/2026 01:57 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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