CVE-2021-36288Network attack vector

Unauthenticated restricted-file access via path traversal

Published Apr 8, 2022 · Updated Sep 16, 2024

Path traversal in Dell VNX2 for File 8.1.21.266 and earlier allows remote attackers to read or write restricted files. Dell has not published the affected endpoint, function, or path-normalization operation that accepts traversal input. No authentication or user interaction is required, and the bounded consequence is unauthorized access to files exposed by the undisclosed traversal path.

CVSS severity8.6
High
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Dell VNX2 for File 8.1.21.266 and earlier allows remote attackers to read or write restricted files. Dell has not published the affected endpoint, function, or path-normalization operation that accepts traversal input. No authentication or user interaction is required, and the bounded consequence is unauthorized access to files exposed by the undisclosed traversal path.

The record

CVE
CVE-2021-36288
Published
Apr 8, 2022
Updated
Sep 16, 2024
Vendor
Dell
Product
VNX2
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <Version 8.1.21.303 (file) Version 5.33.021.5.303 (block)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dell · VNX2version=unspecified <Version 8.1.21.303 (file) Version 5.33.021.5.303 (block)

Published CVSS scores

8.6DellCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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