CVE-2024-32868Network attack vector

MFA bypass via unlimited one-time-password attempts

Published Apr 25, 2024 · Updated Aug 5, 2024

Improper authentication in ZITADEL before 2.50.0 allows remote authenticated users to bypass MFA by repeatedly guessing OTP codes. The TOTP, SMS OTP, and email OTP verification paths did not count failed checks against the lockout policy, so guesses remained unlimited. A valid password and an account using one of these second factors are required; successful guessing grants access as that account.

CVSS severity7.1
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in ZITADEL before 2.50.0 allows remote authenticated users to bypass MFA by repeatedly guessing OTP codes. The TOTP, SMS OTP, and email OTP verification paths did not count failed checks against the lockout policy, so guesses remained unlimited. A valid password and an account using one of these second factors are required; successful guessing grants access as that account.

The record

CVE
CVE-2024-32868
Published
Apr 25, 2024
Updated
Aug 5, 2024
Vendor
ZITADEL
Product
ZITADEL
Classifications
CWE-307, CWE-287, CWE-297, T1110.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.50.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ZITADEL · ZITADELversion=< 2.50.0

Published CVSS scores

7.1GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5ZITADELCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
CWE-287Improper Authentication
CWE-297Improper Validation of Certificate with Host Mismatch
T1110.001Password Guessing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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