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01 Record

CVE-2023-4976

FlashBlade Authentication Mechanism Vulnerability

CriticalPUBLISHEDCNA: PureStorage
CNA base score9.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

02 Description

FlashBlade Authentication Mechanism Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.38% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 32.2% of scored records. A rank, not a probability.
NVD base score
9.3 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-07-17 15:25Z2 YR AGO
Last updated
2025-04-10 14:18Z1 YR AGO
Reserved
2023-09-14
Assigning CNA
PureStorage
Record state
PUBLISHED
Severity
Critical (CVSS 9.3)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-269Improper Privilege ManagementClass
Data version
5.1
Document digest
90d23281d2425ef84a5f231fc26930b2531e66c23f76da1a8498c9e39b834ca1

05 Affected products

VendorProductVersionsPlatforms
PureStorageFlashBlade3.3.5 to 3.3.10, 4.0.4 to 4.0.6, 4.1.0 to 4.1.8, 4.2.0 to 4.2.2Purity//FB

06 References

07 Remediation

This vulnerability can be fixed either by applying a patch or upgrading to an unaffected Purity version. This issue is resolved in the following FlashBlade Purity versions: * Purity//FB 3.3.11 or later * Purity//FB 4.1.9 or later * Purity//FB 4.2.3 or later * Purity//FB 4.3.0 or later * Purity//FB 4.4.0 or later