CVE-2021-29842

mediumpriority · track · 21EPSS 0.013 · 71 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.34% (71st) EPSS

CVSS 5 · medium

Is it mine?

11 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

IBM WebSphere Application Server 7.0, 8.0, 8.5, 9.0 and Liberty 17.0.0.3 through 21.0.0.9 could allow a remote user to enumerate usernames due to a difference of responses from valid and invalid login attempts. IBM X-Force ID: 205202.

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⚠ sources disagree · low–medium · 3.7–5.3

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

v3.03.7lowCVSS:3.0/AC:H/C:L/A:N/S:U/UI:N/PR:N/AV:N/I:N/RL:O/E:U/RC:Csecondary · ENISA EU

v3.03.7lowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · psirt@us.ibm.com USexploitability 2.2 · 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-307USprimary

affected products (11)

Products and version ranges known to be affected.

IBM WebSphere Application Server≤ 9.0enisa_euvdEU
IBM WebSphere Application Server≤ 8.5enisa_euvdEU
IBM WebSphere Application Server≤ 7.0enisa_euvdEU
IBM WebSphere Application Server≤ 8.0enisa_euvdEU
IBM WebSphere Application Server Liberty≤ 17.0.0.3enisa_euvdEU
IBM WebSphere Application Server Liberty≤ 21.0.0.9enisa_euvdEU
ibm websphere application server17.0.0.3 → 21.0.0.9nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere application server7.0.0.0 → 7.0.0.45nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere application server8.0.0.0 → 8.0.0.15nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere application server8.5 → 8.5.5.20nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere application server9.0.0.0 → 9.0.5.9nvdUScpe:2.3:a:ibm:websphere_application_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 2021-09-16modified 2026-06-17

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+820 more

references (26)

External citations — patches, advisories, analysis.

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