What is CVE-2021-21600?

CVE-2021-21600 is a medium-severity vulnerability in Dell EMC Networker, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2021-08-10.

How severe is CVE-2021-21600?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Dell EMC Networker

CVE-2021-21600

Dell EMC NetWorker, 19.4 or older, contain an uncontrolled resource consumption flaw in its API service. An authorized API user could potentially exploit this vulnerability via the web and desktop user interfaces, leading to denial of service in the manageability path.

Published 2021-08-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Dell EMC Networker
Dell Networker — versions unspecified

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

www.dell.com/support/kbdoc/000189694 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21600?: CVE-2021-21600 is a medium-severity vulnerability in Dell EMC Networker, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2021-08-10.
How severe is CVE-2021-21600?: Medium severity. CVSS v3 base score is 6.5 out of 10.