HOMEVULNERABILITIESCVE-2026-34992
HIGH

CVE-2026-34992

CWE-311Published: April 6, 2026· Updated: Apr 7, 2026

7.1
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.4th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34992 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeX
Impact
Confidentiality
Integrity
Availability
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected Vendors & Products

Mentioned vendors (from description):
Kubernetes
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (5)

→
https://github.com/antrea-io/antrea/blob/main/docs/traffic-encryption.md
→
https://github.com/antrea-io/antrea/commit/738bad662b20a5d358d19466936176ef580a9b07
→
https://github.com/antrea-io/antrea/pull/7757
→
https://github.com/antrea-io/antrea/pull/7759
→
https://github.com/antrea-io/antrea/security/advisories/GHSA-qcmw-8mm4-4p28

Quick Facts

CVE IDCVE-2026-34992
CVSS Score7.1 / 10
SeverityHIGH
WeaknessCWE-311
CISA KEVNo
EPSS (30d)0.01%
PublishedApr 6, 2026

Related CVEs (CWE-311)

CVE-2025-69969
9.6
CVE-2026-28678
9.1
CVE-2026-34486
7.5
CVE-2026-55568
5.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-34992 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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