7.5

CVE-2026-34992: antrea-io antrea Missing Encryption of Sensitive Data

CVSS: 7.5v3.1HighAnalyzed
AliasesGHSA-qcmw-8mm4-4p28GO-2026-5579
Published 06-04-2026Last modified 07-04-2026
Open JSON

Vulnerability summary

CVE-2026-34992 is a high (CVSS 7.5) Missing Encryption of Sensitive Data vulnerability in antrea-io antrea. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.7% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.21%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:21483-1

Timeline

  1. 06-04-2026
    PublishedVulnerability first disclosed.
  2. 07-04-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

+0.09 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Antrea-io1 product
  • antrea< 2.4.5 | ≥ 2.5.0, < 2.5.2
Antrea.io1 product
  • antrea≥ 2.5.0 (No fix recorded) | All versions (No fix recorded) | < 1.11.0-alpha.0.0.20260225185322-738bad662b20 | ≥ 1.11.0 (No fix recorded)
Linuxfoundation1 product
  • antrea< 2.4.5 | ≥ 2.5.0, < 2.5.2

3 vendors · 3 products

References

7 links