UpHeron
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Servers and applications

CVE-2025-64102

Brute-forcing authentication factors

Severity
High 7.7
Published
29 Oct 2025
Last changed
19 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.71.18, 3.4.3, 4.6.0
Also known as
GHSA-xrw9-r35x-x878
Sources
NVD, Project advisories (GitHub)

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…

Affected software

SoftwareAffected versions
ZITADELServers and applications · cpe:a:zitadel:zitadel
  • Every version before 2.71.18
  • From 3.0.0 before 3.4.3
  • From 4.0.0 before 4.6.0
ZITADELServers and applications · github:zitadel/zitadel
  • Every version before 2.71.18
  • From 3.0.0 before 3.4.3
  • From 4.0.0 before 4.6.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-64102
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-64102
  • GitHub Advisory Database https://github.com/advisories/GHSA-xrw9-r35x-x878
  • github.com https://github.com/zitadel/zitadel/security/advisories/GHSA-xrw9-r35x-x878