Home/CVE/Lack of length check vulnerability in the HW_KEYMASTER module. Successful exploitation of this vulnerability may cause o
CVE

CVE-2021-46887

Lack of length check vulnerability in the HW_KEYMASTER module. Successful exploitation of this vulnerability may cause o

Lack of length check vulnerability in the HW_KEYMASTER module. Successful exploitation of this vulnerability may cause out-of-bounds read.

CRITICAL · CVSS 9.8 EPSS 0.00148
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Affected Products & Versions

1
huawei emuiall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · psirt@huawei.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 May 2023 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://consumer.huawei.com/en/support/bulletin/2023/5/Vendor Advisory
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