← Vulnerability feed

Vulnerability record · CVE-2025-64103 · published 29 October 2025

CVE-2025-64103: Zitadel improper authentication vulnerability

Zitadel · Zitadel

Starting from 2.53.6, 2.54.3, and 2.55.0, Zitadel only required multi factor authentication in case the login policy has either enabled requireMFA or requireMFAForLocalUsers. If a user has set up MFA without this requirement, Zitadel would consider single factor auhtenticated sessions as valid as well and not require multiple factors. Bypassing second authentication factors weakens multifactor authentication and enables attackers to bypass the more secure factor. An attacker can target the TOTP code alone, only six digits, bypassing password verification entirely and potentially compromising accounts with 2FA enabled. This vulnerability is fixed in 4.6.0, 3.4.3, and 2.71.18.

8.7 CVSS 4.0 High EPSS 0.33% · top 76.3% CWE-287 · Improper authenticationCWE-308 · CWE-308
8.7CVSS 4.0 base score
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Starting from 2.53.6, 2.54.3, and 2.55.0, Zitadel only required multi factor authentication in case the login policy has either enabled requireMFA or requireMFAForLocalUsers. If a user has set up MFA without this requirement, Zitadel would consider single factor auhtenticated sessions as valid as well and not require multiple factors. Bypassing second authentication factors weakens multifactor authentication and enables attackers to bypass the more secure factor. An attacker can target the TOTP code alone, only six digits, bypassing password verification entirely and potentially compromising accounts with 2FA enabled. This vulnerability is fixed in 4.6.0, 3.4.3, and 2.71.18.

CVSS:4.0/AV:N/AC:L/AT:N/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/zitadel/zitadel/commit/b284f8474eed0cba531905101619e7ae7963156b Patch
https://github.com/zitadel/zitadel/security/advisories/GHSA-cfjq-28r2-4jv5 Vendor Advisory

Track CVE-2025-64103 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2026-29191Zitadel cross-site scripting vulnerabilityZITADEL is an open source identity management platform. From version 4.0.0 to 4.11.1, a vulnerability in Zitadel's login V2 interface was discovered …EPSS 0.38%9.3CVE-2026-29067Zitadel open redirect vulnerabilityZITADEL is an open source identity management platform. From version 4.0.0-rc.1 to 4.7.0, a potential vulnerability exists in ZITADEL's password rese…EPSS 0.36%9.1CVE-2024-49753Zitadel improper input validation vulnerabilityZitadel is open-source identity infrastructure software. Versions prior to 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 have a flaw in …EPSS 0.65%9.0CVE-2025-27507Zitadel insecure direct object reference vulnerabilityThe open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. ZITADEL's Admin API contains In…EPSS 0.60%8.8CVE-2025-64101Zitadel open redirect vulnerabilityZitadel is open-source identity infrastructure software. Prior to 4.6.0, 3.4.3, and 2.71.18, a potential vulnerability exists in ZITADEL's password r…EPSS 0.34%8.8CVE-2025-48936Zitadel open redirect vulnerabilityZitadel is open-source identity infrastructure software. Prior to versions 2.70.12, 2.71.10, and 3.2.2, a potential vulnerability exists in the passw…EPSS 0.39%8.8CVE-2023-49097Zitadel weak password recovery vulnerabilityZITADEL is an identity infrastructure system. ZITADEL uses the notification triggering requests Forwarded or X-Forwarded-Host header to build the but…EPSS 0.77%8.8CVE-2022-36051Zitadel interpretation conflict vulnerabilityZITADEL combines the ease of Auth0 and the versatility of Keycloak.**Actions**, introduced in ZITADEL **1.42.0** on the API and **1.56.0** for Consol…EPSS 0.99%

Source: NIST National Vulnerability Database (record CVE-2025-64103), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.