CVE-2021-27217

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

1.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 73.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/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

2021-03-04 17:45Z5 YR AGO

Last updated

2024-08-03 20:40Z2 YR AGO

Reserved

2021-02-15

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

3010f62cf58f7b5fe2ce86f03afb26fccc077924e83296b0c8dc935437f425d6

• github.comhttps://github.com/Yubico/yubihsm-shell/releasesx_refsource_MISC
• www.yubico.comhttps://www.yubico.com/support/security-advisories/ysa-2021-01/x_refsource_CONFIRM
• blog.inhq.nethttps://blog.inhq.net/posts/yubico-libyubihsm-vuln2x_refsource_MISC