CVE-2019-4551

mediumpriority · track · 21OT risk · elevatedEPSS 0.013 · 70 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.28% (70th) EPSS

CVSS 5 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.05.3mediumCVSS:3.0/C:L/UI:N/PR:N/S:U/AV:N/AC:L/A:N/I:N/E:U/RC:C/RL:Osecondary · ENISA EU

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · psirt@us.ibm.com USexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimary

affected products (2)

Products and version ranges known to be affected.

IBM Security Directory Server≤ 6.4.0enisa_euvdEU
ibm security directory server6.4.0.0 → 6.4.0.20nvdUScpe:2.3:a:ibm:security_directory_server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-02-04modified 2026-06-17

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references (9)

External citations — patches, advisories, analysis.

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