Home/CVE/The HW_KEYMASTER module has a vulnerability of missing bounds check on length.Successful exploitation of this vulnerabil
CVE

CVE-2021-46839

The HW_KEYMASTER module has a vulnerability of missing bounds check on length.Successful exploitation of this vulnerabil

The HW_KEYMASTER module has a vulnerability of missing bounds check on length.Successful exploitation of this vulnerability may cause malicious construction of data, which results in out-of-bounds access.

CRITICAL · CVSS 9.1 EPSS 0.00131
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
CWE-125Out-of-bounds Read
▤

Affected Products & Versions

2
huawei emuiall versions
huawei harmonyosall versions
▣

Scoring & Timeline

9.1
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 NVD14 Oct 2022 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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.
🔗

References & Sources

2
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/2022/10/Vendor Advisory
https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202210-0000001416095697Vendor Advisory
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