CVE-2021-21507
HIGHDescription
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 to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 42% of all known CVEs.
References
Related Vulnerabilities
Other CWE-261 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-10919 | Medium | 5.9 | 1.6% | - | - |
| CVE-2017-7905 | Critical | 9.8 | 1.3% | - | - |
| CVE-2020-10275 | Critical | 9.8 | 1.0% | - | - |
| CVE-2023-22271 | Medium | 5.3 | 0.8% | - | Fix |
| CVE-2025-31229 | Critical | 9.1 | 0.7% | - | Fix |
| CVE-2023-0525 | High | 7.5 | 0.7% | - | Fix |
Common questions
How do I fix CVE-2021-21507?
Published advisories record a fix for 11 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2021-21507 being actively exploited?
Not that we know of. CVE-2021-21507 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.54% is the estimated probability that it will be exploited in the next 30 days. That is higher than 42% of all scored CVEs.
How severe is CVE-2021-21507?
CVE-2021-21507 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2021-21507 affect?
Published advisories record a fix for r1-2210 firmware (NVD), r1-2401 firmware (NVD), x1008 firmware (NVD), x1008p firmware (NVD), and 7 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.