CVE-2021-44033Public exploit

PIN lockout bypass via reload-reset attempt counter

Published Nov 19, 2021 · Updated Aug 4, 2024

Authentication bypass in Ionic Identity Vault 5.0.0 through 5.0.6 allows physically proximate attackers to retry vault PINs without limit. Closing and reopening the host app before the failure threshold resets the failed-attempt counter instead of preserving it across reloads. Physical access and the ability to restart the app are required; repeated guesses can recover the vault PIN and expose protected vault data.

CVSS severity6.8
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Ionic Identity Vault 5.0.0 through 5.0.6 allows physically proximate attackers to retry vault PINs without limit. Closing and reopening the host app before the failure threshold resets the failed-attempt counter instead of preserving it across reloads. Physical access and the ability to restart the app are required; repeated guesses can recover the vault PIN and expose protected vault data.

The record

CVE
CVE-2021-44033
Published
Nov 19, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-307, T1110
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 19, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST National Vulnerability DatabaseCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.6NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:P/I:P/A:P

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110Brute Force

Public exploit references

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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