CVE-2026-62370
KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub
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.
INFO
Published Date :
Sept. 21, 2026, 5:17 p.m.
Last Modified :
Sept. 21, 2026, 5:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-62370
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update KubeEdge to version 1.21.2 or later.
- Apply patches for versions 1.22.2 or 1.23.1.
- Monitor cloud-edge communication for disruptions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-62370.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-62370 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-62370
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-62370 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-62370 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Sep. 21, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-789 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/62xxx/CVE-2026-62370.json">CVE-2026-62370</a> Added Reference https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.21.md Added Reference https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.22.md Added Reference https://github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.23.md Added Reference https://github.com/kubeedge/kubeedge/commit/0fe1ea18e5d7fde29633286ddf1c7e71cb39606f Added Reference https://github.com/kubeedge/kubeedge/commit/725a73ca35a65d91aa6338e52b8faaab6058f528 Added Reference https://github.com/kubeedge/kubeedge/commit/cc79621943fff9d3f62638d9403ef0cfeda3d0e7 Added Reference https://github.com/kubeedge/kubeedge/pull/7028 Added Reference https://github.com/kubeedge/kubeedge/pull/7029 Added Reference https://github.com/kubeedge/kubeedge/pull/7030 Added Reference https://github.com/kubeedge/kubeedge/releases/tag/v1.21.2 Added Reference https://github.com/kubeedge/kubeedge/releases/tag/v1.22.2 Added Reference https://github.com/kubeedge/kubeedge/releases/tag/v1.23.1 Added Reference https://github.com/kubeedge/kubeedge/security/advisories/GHSA-gfw4-49f9-cp25