antrea-io antrea up to 2.4.4/2.5.1 missing encryption

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k1.63

Summaryinfo

A vulnerability has been found in antrea-io antrea up to 2.4.4/2.5.1 and classified as problematic. The affected element is an unknown function. This manipulation causes missing encryption. This vulnerability appears as CVE-2026-34992. The attacker needs to be present on the local network. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in antrea-io antrea up to 2.4.4/2.5.1 and classified as problematic. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a missing encryption vulnerability. The CWE definition for the vulnerability is CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. As an impact it is known to affect confidentiality. The summary by CVE is:

Antrea is a Kubernetes networking solution intended to be Kubernetes native. Prior to 2.4.5 and 2.5.2, a missing encryption vulnerability affects inter-Node Pod traffic. In Antrea clusters configured for dual-stack networking with IPsec encryption enabled (trafficEncryptionMode: ipsec), Antrea fails to apply encryption for IPv6 Pod traffic. While the IPv4 traffic is correctly encrypted via ESP (Encapsulating Security Payload), traffic using IPv6 is transmitted in plaintext. This occurs because the packets are encapsulated (using Geneve or VXLAN) but bypass the IPsec encryption layer. Impacted Users: users with dual-stack clusters and IPsec encryption enabled. Single-stack IPv4 or IPv6 clusters are not affected. This vulnerability is fixed in 2.4.5 and 2.5.2.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-34992 since 03/31/2026. The exploitation appears to be easy. The attack needs to be done within the local network. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

Upgrading to version 2.4.5 or 2.5.2 eliminates this vulnerability.

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

Productinfo

Vendor

Name

Version

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: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Missing encryption
CWE: CWE-311 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
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 2.4.5/2.5.2

Timelineinfo

03/31/2026 CVE reserved
04/06/2026 +6 days Advisory disclosed
04/06/2026 +0 days VulDB entry created
04/06/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-34992 (🔒)
GCVE (CVE): GCVE-0-2026-34992
GCVE (VulDB): GCVE-100-355603

Entryinfo

Created: 04/06/2026 19:06
Changes: 04/06/2026 19:06 (66)
Complete: 🔍
Cache ID: 216:806:103

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

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