CVE-2026-62370

MEDIUM 6.5

KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. From 1.0.0 until 1.21.2, 1.22.2, and 1.23.1, Reader.Read in pkg/viaduct/pkg/packer trusts the 32-bit PackageHeader.PayloadLen received through the CloudHub viaduct message-processing path and allocates that amount of memory before validating an upper bound. An authenticated malicious or compromised edge peer can repeatedly send crafted headers with excessive declared lengths, causing memory exhaustion, CloudHub process termination or restart loops, and temporary disruption of cloud-edge communication. This issue does not provide unauthenticated access or direct code execution. This issue is fixed in versions 1.21.2, 1.22.2, and 1.23.1.

CWE	CWE-789
Vendor	kubeedge
Product	kubeedge
Published	Sep 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

kubeedge / kubeedge

>= 1.0.0, < 1.21.2 >= 1.22.0, < 1.22.2 >= 1.23.0, < 1.23.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗