Out-of-bounds Read in Huawei Emui
CVE-2021-46840
The HW_KEYMASTER module has an out-of-bounds access vulnerability in parameter set verification.Successful exploitation of this vulnerability may cause malicious construction of data, which results in out-of-bounds access.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Huawei Emui — versions 12.0.0, 11.0.1
- Huawei Harmonyos — versions 2.0
Weakness classification (CWE)
References
- consumer.huawei.com/en/support/bulletin/2022/10/ (Vendor Advisory)
- device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202210-0… (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-46840?
- CVE-2021-46840 is a critical-severity vulnerability in Huawei Emui, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2022-10-14.
- How severe is CVE-2021-46840?
- Critical severity. CVSS v3 base score is 9.1 out of 10.