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01 Record

CVE-2021-29842

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

LowPUBLISHEDCNA: ibm
CNA base score3.7 CVSS v3.xCVSS:3.0/AC:H/C:L/A:N/S:U/UI:N/PR:N/AV:N/I:N/RL:O/E:U/RC:C

02 Description

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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.34% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 71.0% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-09-16 15:50Z5 YR AGO
Last updated
2024-09-17 01:16Z2 YR AGO
Reserved
2021-03-31
Assigning CNA
ibm
Record state
PUBLISHED
Severity
Low (CVSS 3.7)
CNA CVSS vector
CVSS:3.0/AC:H/C:L/A:N/S:U/UI:N/PR:N/AV:N/I:N/RL:O/E:U/RC:C
Weaknesses
  • CWE-307Improper Restriction of Excessive Authentication AttemptsBase
Data version
5.1
Document digest
ab8f3b6c2d137d66a640fa40d832634a1dd83072b7903745cf7518f90ace8586

05 Affected products

VendorProductVersionsPlatforms
IBMWebSphere Application Server7.0, 8.0, 8.5, 9.0—
IBMWebSphere Application Server Liberty17.0.0.3, 21.0.0.9—

06 References