How severe is CVE-2021-21570?

CVE-2021-21570 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-21570 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21570?

CVE-2021-21570 affects Dell Emc Networker. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21570?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-21570 published?

CVE-2021-21570 was published on 2021-09-28 and last updated on 2026-06-17.

CVE-2021-21570

CVE-2021-21570 is a medium-severity vulnerability in Dell Emc Networker with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 4.0
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Dell Emc Networker
Published: 2021-09-28
Last modified: 2026-06-17

Description

Dell NetWorker, versions 18.x and 19.x contain an Information disclosure vulnerability. A NetWorker server user with remote access to NetWorker clients may potentially exploit this vulnerability and gain access to unauthorized information.

Frequently asked questions

What is CVE-2021-21570?: Dell NetWorker, versions 18.x and 19.x contain an Information disclosure vulnerability. A NetWorker server user with remote access to NetWorker clients may potentially exploit this vulnerability and gain access to unauthorized information.
How severe is CVE-2021-21570?: CVE-2021-21570 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-21570 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21570?: CVE-2021-21570 affects Dell Emc Networker. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21570?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21570 published?: CVE-2021-21570 was published on 2021-09-28 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/en-us/000188311/dsa-2021-124-dell-networker-security-update-for-multiple-vulnerabilities

Affected products (1)

cpe:2.3:a:dell:emc_networker:*:*:*:*:*:*:*:*

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