CVE-2019-4551Network attack vector

Unauthenticated protected-area information disclosure

Published Feb 4, 2020 · Updated Sep 16, 2024

Missing authentication in IBM Security Directory Server 6.4.0 allows remote attackers to read information from protected areas. IBM has not disclosed the affected critical resource or functionality, the faulty code locus, or the request that reaches it without an authentication check. Access requires no account or user interaction, and the published consequence is limited to confidentiality without reported data modification or service interruption.

CVSS severity5.3
Medium
EPSS probability1.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in IBM Security Directory Server 6.4.0 allows remote attackers to read information from protected areas. IBM has not disclosed the affected critical resource or functionality, the faulty code locus, or the request that reaches it without an authentication check. Access requires no account or user interaction, and the published consequence is limited to confidentiality without reported data modification or service interruption.

The record

CVE
CVE-2019-4551
Published
Feb 4, 2020
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Security Directory Server
Classifications
CWE-306
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2020CVE 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=6.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Security Directory Serverversion=6.4.0

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.6IBMCVSS:3.0/C:L/UI:N/PR:N/S:U/AV:N/AC:L/A:N/I:N/E:U/RC:C/RL:O

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

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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