How severe is CVE-2021-21507?

CVE-2021-21507 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21507 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21507?

CVE-2021-21507 primarily affects Dell X1008p Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21507?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-21507 published?

CVE-2021-21507 was published on 2021-04-30 and last updated on 2026-06-17.

CVE-2021-21507

CVE-2021-21507 is a high-severity vulnerability in Dell X1008p Firmware with a CVSS 3.x base score of 8.8. 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-326.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Dell X1008p Firmware
Published: 2021-04-30
Last modified: 2026-06-17

Description

Dell EMC Networking X-Series firmware versions prior to 3.0.1.8 and Dell EMC PowerEdge VRTX Switch Module firmware versions prior to 2.0.0.82 contain a Weak Password Encryption Vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability, leading to the disclosure of certain user credentials. The attacker may be able to use the exposed credentials to access the vulnerable system with privileges of the compromised account.

Frequently asked questions

What is CVE-2021-21507?: Dell EMC Networking X-Series firmware versions prior to 3.0.1.8 and Dell EMC PowerEdge VRTX Switch Module firmware versions prior to 2.0.0.82 contain a Weak Password Encryption Vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability, leading to the disclosure of certain user credentials. The attacker may be able to use the exposed credentials to access the vulnerable system with privileges of the compromised account.
How severe is CVE-2021-21507?: CVE-2021-21507 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21507 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21507?: CVE-2021-21507 primarily affects Dell X1008p Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21507?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-21507 published?: CVE-2021-21507 was published on 2021-04-30 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/000185252

Affected products (11)

cpe:2.3:o:dell:x1008p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x1018p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x1026p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x1052p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x4012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:r1-2401_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:r1-2210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x1008_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x1018_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x1026_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:x1052_firmware:*:*:*:*:*:*:*:*

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