CVE-2021-31616

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

2.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 83.3% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

Published

2021-05-06 11:01Z5 YR AGO

Last updated

2024-08-03 23:03Z2 YR AGO

Reserved

2021-04-23

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

cc63cda72b96419d8847b1210d67873052205895aaa581ac2c9b68a877570a72

• github.comhttps://github.com/keepkey/keepkey-firmware/releases/tag/v7.1.0x_refsource_MISC
• github.comhttps://github.com/keepkey/keepkey-firmware/commit/e49d45594002d4d3fbc1f03488e6dfc0a0a65836x_refsource_MISC
• blog.inhq.nethttps://blog.inhq.net/posts/keepkey-CVE-2021-31616/x_refsource_MISC
• shapeshift.comhttps://shapeshift.com/library/keepkey-important-update-issued-april-4-requiredx_refsource_MISC