CVE-2025-64102

Zitadel allows brute-forcing authentication factors

High7.7EPSS 0.37%

Published: 29 Oct 2025
Updated: 30 Oct 2025
Reserved: 27 Oct 2025
Assigned by: GitHub_M

Description

Zitadel is open-source identity infrastructure software. Prior to 4.6.0, 3.4.3, and 2.71.18, an attacker can perform an online brute-force attack on OTP, TOTP, and passwords. While Zitadel allows preventing online brute force attacks in scenarios like TOTP, Email OTP, or passwords using a lockout mechanism. The mechanism is not enabled by default and can cause a denial of service for the corresponding user if enabled. Additionally, the mitigation strategies were not fully implemented in the more recent resource-based APIs. This vulnerability is fixed in 4.6.0, 3.4.3, and 2.71.18.

Scores

CVSS scores of CVE-2025-64102, by who scored it
Scored by	CVSS	Score	Vector
GitHub_MCNA (assigner)	4.0	High7.7	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
NVDNVD · Analyzed	4.0	High7.7	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.37% · top 69% of all CVEs (6 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.

Weakness

CWE-307: Improper Restriction of Excessive Authentication Attempts (opens in a new tab)All about CWE-307 and its CVEs

Affected products

zitadel · zitadel
- affected >= 4.0.0-rc.1, < 4.6.0
- affected >= 3.0.0-rc.1, < 3.4.3
- affected >= 2.0.0, < 2.71.18

Affected packages

From reviewed advisories of the GitHub Advisory Database.

Gogithub.com/zitadel/zitadelGHSA-xrw9-r35x-x878 (opens in a new tab)
Gogithub.com/zitadel/zitadel/v2GHSA-xrw9-r35x-x878 (opens in a new tab)

References (2)

https://github.com/zitadel/zitadel/security/advisories/GHSA-xrw9-r35x-x878 (opens in a new tab)x_refsource_CONFIRM
https://github.com/zitadel/zitadel/commit/b8db8cdf9cc8ea13f461758aef12457f8b7d972a (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated 30 Oct 2025, 14:53 UTC.