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01 Record

CVE-2021-39996

There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.

UnratedPUBLISHEDCNA: huawei
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.84% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 57.5% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-01-07 22:39Z4 YR AGO
Last updated
2024-08-04 02:20Z2 YR AGO
Reserved
2021-08-23
Assigning CNA
huawei
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
2ceea26c92e7330439b73fe83121ca5ec2db2e42cdd388c7cf8a60fee04124e4

05 Affected products

VendorProductVersionsPlatforms
n/aEMUI;Magic UI;HarmonyOSEMUI 10.0.0,EMUI 10.1.0,EMUI 10.1.1,EMUI 11.0.0,EMUI 11.0.1, Magic UI 3.0.0,Magic UI 3.1.0,Magic UI 3.1.1,Magic UI 4.0.0, HarmonyOS 2.0—

06 References