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CVE-2026-62370— KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub

Quick assessment

Affected
kubeedge kubeedge
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

CVSS 6.5 · Medium EPSS 0.50% · P42

Affected Version Matrix 3

VendorProduct Version RangeStatus
kubeedge kubeedge >= 1.0.0, < 1.21.2 affected
>= 1.22.0, < 1.22.2 affected
>= 1.23.0, < 1.23.1 affected
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I. Basic Information for CVE-2026-62370

Vulnerability Information

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Vulnerability Title
KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kubeedge kubeedge >= 1.0.0, < 1.21.2 -

II. Public POCs for CVE-2026-62370

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III. Intelligence Information for CVE-2026-62370

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Patches & Fixes for CVE-2026-62370 (6)

Other References for CVE-2026-62370 (7)

Same Patch Batch · kubeedge · 2026-09-21 · 4 CVEs total

CVE-2026-62182 8.8 HIGH KubeEdge: ConfigUpdateJob updateFields enables remote shell injection and code execution o
CVE-2026-62371 8.8 HIGH KubeEdge: Command Injection in NodeUpgradeJob - RCE on edge nodes via v1alpha2 API
CVE-2026-62369 8.1 HIGH KubeEdge: keadm DecompressTarGz path traversal enables arbitrary file write on Windows dur

IV. Related Vulnerabilities

Same product: kubeedge
Same vendor: kubeedge
Same weakness: CWE-789

V. Comments for CVE-2026-62370

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