CVE-2021-21507

Unauthenticated credential disclosure via weak password encryption

Published Apr 30, 2021 · Updated Sep 16, 2024

Weak password encryption in Dell PowerEdge VRTX Switch Module firmware before 2.0.0.82 allows remote attackers to disclose user credentials. Dell has not published the affected credential-storage locus, encryption scheme, or the operation that inadequately protects passwords. Exploitation requires unauthenticated access from an adjacent network and exposes credentials usable with the compromised account's privileges.

CVSS severity8.8
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak password encryption in Dell PowerEdge VRTX Switch Module firmware before 2.0.0.82 allows remote attackers to disclose user credentials. Dell has not published the affected credential-storage locus, encryption scheme, or the operation that inadequately protects passwords. Exploitation requires unauthenticated access from an adjacent network and exposes credentials usable with the compromised account's privileges.

The record

CVE
CVE-2021-21507
Published
Apr 30, 2021
Updated
Sep 16, 2024
Vendor
Dell
Product
Dell PowerEdge VRTX Switch Modules
Classifications
CWE-326, CWE-261
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 30, 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?

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

  1. Affected versionversion=unspecified <2.0.0.82

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Dell · Dell PowerEdge VRTX Switch Modulesversion=unspecified <2.0.0.82

Published CVSS scores

8.8DellCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength
CWE-261Weak Encoding for Password

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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