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Security Advisory - Privilege Escalation Vulnerability in Huawei Product

  • SA No:huawei-sa-20211103-01-privilege
  • Initial Release Date: 2021-11-03
  • Last Release Date: 2021-11-03

There is a privilege escalation vulnerability in some Huawei products. Due to lack of privilege restrictions, an authenticated local attacker can perform specific operation to exploit this vulnerability. Successful exploitation may cause the attacker to obtain a higher privilege. (Vulnerability ID: HWPSIRT-2021-78991)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2021-39976.

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-20211103-01-privilege-en

Product Name

Affected Version

Resolved Product and Version

CloudEngine 5800

V200R020C00SPC600

V200R020SPH008



Successful exploitation may cause the attacker to obtain a higher privilege.

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

Base Score: 6.7 (AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)

Temporal Score: 6.2 (E:F/RL:O/RC:C)

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

Attackers can login the system with common privilege.

Vulnerability details:

There is a privilege escalation vulnerability in some Huawei products. Due to lack of privilege restrictions, an authenticated local attacker can perform specific operation to exploit this vulnerability. Successful exploitation may cause the attacker to obtain a higher privilege.

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.


2021-11-03 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.

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