CVE-2021-21587Public exploit

Filesystem path disclosure via verbose endpoint error

Published Jul 15, 2021 · Updated Sep 16, 2024

Full path disclosure in Dell Wyse Management Suite 3.2 and earlier allows local users to obtain filesystem paths through a crafted PUT request. The /ccm-web/image/pull/a/b endpoint returns a verbose error containing the installation path when it receives malformed path segments. A valid Wyse device ID obtained from a configured thin client is required, and the disclosed path facilitates a separate arbitrary-file-read flaw.

CVSS severity5.3
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Full path disclosure in Dell Wyse Management Suite 3.2 and earlier allows local users to obtain filesystem paths through a crafted PUT request. The /ccm-web/image/pull/a/b endpoint returns a verbose error containing the installation path when it receives malformed path segments. A valid Wyse device ID obtained from a configured thin client is required, and the disclosed path facilitates a separate arbitrary-file-read flaw.

The record

CVE
CVE-2021-21587
Published
Jul 15, 2021
Updated
Sep 16, 2024
Vendor
Dell
Product
Wyse Management Suite
Classifications
CWE-200, T1083
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2021CVE 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?

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  1. Affected versionversion=unspecified <3.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Dell · Wyse Management Suiteversion=unspecified <3.3

Published CVSS scores

3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.3DellCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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.

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No observations available

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

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1083File and Directory Discovery

Public exploit references

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Technologies

Your stack

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Your stack

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