CVE-2021-21558

LDAP credential disclosure via sensitive log entries

Published Jun 8, 2021 · Updated Sep 16, 2024

Information disclosure in Dell Technologies NetWorker 18.x and 19.1.x through 19.4.0.1 allows local users to read LDAP credentials from NMC logs. The NetWorker Management Console gstd component writes LDAP credentials into local log files instead of excluding sensitive authentication data. Exploitation requires local administrator access to the NMC host, and the exposed credentials permit changes to the network domain.

CVSS severity8.2
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Dell Technologies NetWorker 18.x and 19.1.x through 19.4.0.1 allows local users to read LDAP credentials from NMC logs. The NetWorker Management Console gstd component writes LDAP credentials into local log files instead of excluding sensitive authentication data. Exploitation requires local administrator access to the NMC host, and the exposed credentials permit changes to the network domain.

The record

CVE
CVE-2021-21558
Published
Jun 8, 2021
Updated
Sep 16, 2024
Vendor
Dell Technologies
Product
NetWorker
Classifications
CWE-532, T1552.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 8, 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 <19.4.0.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell Technologies · NetWorkerversion=unspecified <19.4.0.2

Published CVSS scores

4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
8.2Dell TechnologiesCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

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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