CVE-2021-46903Network attack vector

Service interruption via deletion of required accounts

Published Feb 4, 2024 · Updated Jun 17, 2025

Improper access control in Meinberg LANTIME Firmware before 6.24.029 and 7 before 7.04.008 lets remote authenticated users delete system accounts. The LTOS Web Interface user-management function fails to protect accounts required for device operation from administrator deletion. Administrator privileges are required, and deleting these accounts can interrupt device operation.

CVSS severity6.5
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Meinberg LANTIME Firmware before 6.24.029 and 7 before 7.04.008 lets remote authenticated users delete system accounts. The LTOS Web Interface user-management function fails to protect accounts required for device operation from administrator deletion. Administrator privileges are required, and deleting these accounts can interrupt device operation.

The record

CVE
CVE-2021-46903
Published
Feb 4, 2024
Updated
Jun 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1531
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1531Account Access Removal

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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