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Security Notice -Statement on the Side-Channel Vulnerability Variants 3a and 4

  • Initial Release Date: May 22, 2018
  • Last Release Date: Jun 15, 2018

Huawei noticed that, on May 21, 2018, Intel released Variant 4 (CVE-2018-3639) and Variant 3a (CVE-2018-3640) side-channel vulnerabilities which are derivatives of 
"Spectre" and "Meltdown" previously disclosed by Intel in January 2018. Local attackers can exploit these vulnerabilities to leak information on affected systems. Huawei immediately launched analysis and investigation and communicated with related CPU and operating system suppliers.

Huawei has delivered Security Advisory (SA) for these vulnerabilities. The link of the SA is: Customers can get necessary support for product security vulnerabilities through Huawei local technical service.

2018-06-15 V1.1 Updated Added SA link

2018-05-22 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
To report a security vulnerability in Huawei products and solutions, please send it to For details, please visit

Customers should contact Huawei TAC (Huawei Technical Assistance Center) to get necessary support for product security vulnerabilities. For TAC contact information, please refer to Huawei worldwide website at: