CVE-2021-35392

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

83.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.6% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/A:H

NVD analysis status

Analyzed. 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.

Published

2021-08-16 11:07Z5 YR AGO

Last updated

2024-08-04 00:33Z2 YR AGO

Reserved

2021-06-23

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

a997ccbeccdbecebc6bb7d81a23410b9688c76d5f1f636d3bfdd28ee3731b26a

• www.realtek.comhttps://www.realtek.com/en/cu-1-en/cu-1-taiwan-enx_refsource_MISC
• www.realtek.comhttps://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdfx_refsource_MISC
• www.iot-inspector.comhttps://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chainx_refsource_MISC