CVE-2025-64103 (GCVE-0-2025-64103)

Vulnerability from cvelistv5 – Published: 2025-10-29 18:43 – Updated: 2025-10-30 14:51
VLAI?
Title
Zitadel Bypass Second Authentication Factor
Summary
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.
Severity ?
8.7 (High)
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
CWE
  • CWE-308 - Use of Single-factor Authentication
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
zitadel zitadel Affected: >= 4.0.0-rc.1, < 4.6.0
Affected: >= 3.0.0-rc.1, < 3.4.3
Affected: >= 2.55.0, < 2.71.18
Affected: >= 2.54.3, <= 2.54.10
Affected: >= 2.53.6, <= 2.53.9
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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.