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CVE-2021-21548

HIGH · CVSS 7.4EPSS 0.3%EU EUVD

Dell EMC Unisphere for PowerMax versions before 9.1.0.27, Dell EMC Unisphere for PowerMax Virtual Appliance versions before 9.1.0.27, and PowerMax OS Release 5978 contain an improper certificate validation vulnerability. An unauthenticated remote attacker may potentially exploit this vulnerability to carry out a man-in-the-middle attack by supplying a crafted certificate and intercepting the victim's traffic to view or modify a victim’s data in transit.

Key facts

CVSS score
7.4 (v3.1)
Severity
HIGH
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-295
EPSS score
0.3% (20th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2021-8820)
Published
March 17, 2023
NVD last modified
June 17, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2021-8820 in the EU Vulnerability Database. Last updated in EUVD on February 26, 2025.

View on the EU Vulnerability Database

Affected products

  • dell / emc unisphere for powermax
  • dell / emc unisphere for powermax virtual appliance
  • dell / powermax os

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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CVE-2021-21548: HIGH severity (CVSS 7.4)