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Security Advisory - Out-of-Bounds Read Vulnerability On Several Huawei Products

  • SA No:huawei-sa-20210526-03-dos
  • Initial Release Date: May 26, 2021
  • Last Release Date: May 26, 2021


There is an out-of-bounds read vulnerability on several Huawei products. The vulnerability is due to a function that handles an internal message contains an out-of-bounds read vulnerability.  An attacker could crafted messages between system process, successful exploit could cause Denial of Service (DoS). (Vulnerability ID: HWPSIRT-2020-71802)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2021-22366.

Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210526-03-dos-en


Product Name

Affected Version

Resolved Product and Version

eSE620X vESS

V100R001C10SPC200

V200R001C00SPC360

V100R001C20SPC200

V200R001C00SPC300


An attacker could crafted messages between system process, successful exploit could cause Denial of Service (DoS).


The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).

Base Score: 4.0 (AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Temporal Score: 3.7 (E:F/RL:O/RC:C)


This vulnerability can be exploited only when the following conditions are present:

1、An attacker could log in the local system.

2、An attacker could crafted messages between system process.

Vulnerability details:

The vulnerability is due to a function that handles an internal message contains an out-of-bounds read vulnerability. An attacker could crafted messages between system process, successful exploit could cause Denial of Service (DoS).


Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities.

This vulnerability was discovered by Huawei internal tester.


2021-05-26 V1.0 INITIAL


Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

This document is provided on an "AS IS" basis and does not imply any kind of guarantee or warranty, either express or implied, including the warranties of merchantability or fitness for a particular purpose. In no event shall Huawei or any of its directly or indirectly controlled subsidiaries or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. Your use of the document, by whatsoever means, will be totally at your own risk. Huawei is entitled to amend or update this document from time to time.