CVE-2021-21559

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

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 6.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-06-08 18:05Z5 YR AGO

Last updated

2024-09-17 01:51Z1 YR AGO

Reserved

2021-01-04

Assigning CNA

dell

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-295Improper Certificate ValidationBase

Data version

5.1

Document digest

3d282291fec1cc3edb16dd02c2b717eee941a59510598b1fed484968b445b8ac

• www.dell.comhttps://www.dell.com/support/kbdoc/en-us/000186638/dsa-2021-104-dell-emc-networker-security-update-for-multiple-vulnerabilitiesx_refsource_MISC