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VULNERABILITIES

CVE-2021-37151 Details

Description

CyberArk Identity 21.5.131, when handling an invalid authentication attempt, sometimes reveals whether the username is valid. In certain authentication policy configurations with MFA, the API response length can be used to differentiate between a valid user and an invalid one (aka Username Enumeration). Response differentiation enables attackers to enumerate usernames of valid application users. Attackers can use this information to leverage brute-force and dictionary attacks in order to discover valid account information such as passwords.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.cyberark.com/products/ CVE
https://www.gov.il/en/departments/faq/cve_advisories CVE
https://www.cyberark.com/products/ [email protected]
https://www.gov.il/en/departments/faq/cve_advisories [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-203Observable Discrepancy[email protected]

Affected Products

ProductVersions
cyberark identity
< 21.11.133

CPE

  • cpe:2.3:a:cyberark:identity:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-37151
NVD Published Date:
Sep 1, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]