ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-64102

Zitadel is open-source identity infrastructure software.

Published Oct 29, 2025 · catalog updated Oct 30, 2025 · Zitadel is open-source identity

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-2025-64102. EPSS is 0.37%. Act only if a listed version of Zitadel is open-source identity is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Zitadel is open-source identity).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.37%
Remediation
Version ranges on file
Affected products
vendor zitadel zitadel 3.0.0-rc.1, < 3.4.3

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.

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 3.0.0-rc.1, < 3.4.33.0.0-rc.1, < 3.4.3

How to fix CVE-2025-64102

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-2025-64102. EPSS is 0.37%. Act only if a listed version of Zitadel is open-source identity is installed.

Which versions are affected?

Compare what you have installed with zitadel zitadel 3.0.0-rc.1, < 3.4.3 3.0.0-rc.1, < 3.4.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.37%. 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

    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 correspon

  2. Oct 30, 2025 · EUVD

    Updated

    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 correspon

Sources

  • CVE.orgVulnerability recordCVE-2025-64102

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-64102

    30-day exploitation probability 0.37%

    first.org
  • EUVDVulnerability recordEUVD-2025-36697

    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 password

    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