CVE-2022-34772Network attack vector

Account compromise via unlimited four-digit OTP guesses

Published Aug 22, 2022 · Updated Sep 17, 2024

Weak OTP authentication in Tabit before 3.27.0 allows attackers to gain account access through repeated four-digit code guesses. The login and OTP-resend flows accept unlimited attempts against a four-digit code without rate limiting or an attempt lockout. The record does not identify the prerequisite account information; a successful guess grants only the access assigned to the compromised account.

CVSS severity8.8
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak OTP authentication in Tabit before 3.27.0 allows attackers to gain account access through repeated four-digit code guesses. The login and OTP-resend flows accept unlimited attempts against a four-digit code without rate limiting or an attempt lockout. The record does not identify the prerequisite account information; a successful guess grants only the access assigned to the compromised account.

The record

CVE
CVE-2022-34772
Published
Aug 22, 2022
Updated
Sep 17, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-521, T1110.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3Israel National Cyber DirectorateCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-521Weak Password Requirements
T1110.001Brute Force: Password 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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