How severe is CVE-2023-28373?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in Pure Storage Flasharray Purity

CVE-2023-28373

A flaw exists in FlashArray Purity whereby an array administrator by configuring an external key manager can affect the availability of data on the system including snapshots protected by SafeMode.

Published 2023-10-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Pure Storage Flasharray Purity — versions 6.1.0, 6.2.0, 6.3.0
Purestorage Purity\/\/fa — versions 6.4.0

References

support.purestorage.com/Employee_Handbooks/Technical_Services/PSIRT/Security_Bu… (Vendor Advisory)

Frequently asked questions

What is CVE-2023-28373?: CVE-2023-28373 is a medium-severity vulnerability in Pure Storage Flasharray Purity. CVSS score: 4.4/10. Published 2023-10-03.
How severe is CVE-2023-28373?: Medium severity. CVSS v3 base score is 4.4 out of 10.