Online Brute Force Vulnerability in Zitadel Identity Infrastructure Software
CVE-2025-64102

7.7HIGH

Key Information:

Vendor

Zitadel

Status
Zitadel
Vendor
CVE Published:
29 October 2025

What is CVE-2025-64102?

Zitadel, an open-source identity infrastructure software, is susceptible to online brute-force attacks targeting OTP, TOTP, and passwords in versions prior to 4.6.0, 3.4.3, and 2.71.18. Although Zitadel has a built-in lockout mechanism to thwart such attacks, it is not enabled by default. This lack of default protection can inadvertently lead to denial of service for users when enabled. Additionally, updates to resource-based APIs have not fully implemented necessary mitigation strategies, highlighting the need for users to promptly upgrade to secure versions.

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Affected Version(s)

zitadel >= 4.0.0-rc.1, < 4.6.0 < 4.0.0-rc.1, 4.6.0

zitadel >= 3.0.0-rc.1, < 3.4.3 < 3.0.0-rc.1, 3.4.3

zitadel >= 2.0.0, < 2.71.18 < 2.0.0, 2.71.18

References

https://github.com/zitadel/zitadel/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/zitadel/zitadel/commit/b8db8cdf9cc8ea1...
x_refsource_MISC

CVSS V4

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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