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Vulnerabilities

Vulnerability · CVE-2025-64103

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.

Published Oct 29, 2025 · catalog updated Oct 30, 2025 · Starting from 2.53.6, 2.54.3,

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-64103. EPSS is 0.35%. Act only if a listed version of Starting from 2.53.6, 2.54.3, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Starting from 2.53.6, 2.54.3,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.35%
Remediation
Advisory link
Affected products
vendor zitadel zitadel 2.53.6, ≤ 2.53.9

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 a

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor zitadel zitadel 2.53.6, ≤ 2.53.92.53.6, ≤ 2.53.9

How to fix CVE-2025-64103

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-64103. EPSS is 0.35%. Act only if a listed version of Starting from 2.53.6, 2.54.3, is installed.

Which versions are affected?

Compare what you have installed with zitadel zitadel 2.53.6, ≤ 2.53.9 2.53.6, ≤ 2.53.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.35%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 29, 2025 · EUVD

    Detected

    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 aut

  2. Oct 30, 2025 · EUVD

    Updated

    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 aut

Sources

  • CVE.orgVulnerability recordCVE-2025-64103

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-64103

    30-day exploitation probability 0.35%

    first.org
  • EUVDVulnerability recordEUVD-2025-36696

    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 ses

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 1, 2026
  • CVE.orgOct 25, 2026
  • EUVDOct 25, 2026