CVE-2021-29083

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

2.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 85.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/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.

Published

2021-04-01 05:20Z5 YR AGO

Last updated

2024-09-17 02:42Z2 YR AGO

Reserved

2021-03-23

Assigning CNA

synology

Record state

PUBLISHED

Severity

High (CVSS 7.2)

CNA CVSS vector

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

Weaknesses

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.1

Document digest

903ba6e4a3d69631773561585e8a3ba4b79af47143cf40545c1cbc20e1c51626

• www.synology.comhttps://www.synology.com/security/advisory/Synology_SA_20_26x_refsource_CONFIRM