What is CVE-2021-44033?

CVE-2021-44033 is a medium-severity vulnerability in Ionic Identity Vault, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.8/10. Published 2021-11-19.

How severe is CVE-2021-44033?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Ionic Identity Vault

CVE-2021-44033

In Ionic Identity Vault before 5.0.5, the protection mechanism for invalid unlock attempts can be bypassed.

Published 2021-11-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Ionic Identity Vault

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

ionic.io/docs/identity-vault/changelog (Release Notes, Vendor Advisory)
seclists.org/fulldisclosure/2021/Nov/41 (mailing-list, Exploit, Mailing List, Third Party Advisory)
packetstormsecurity.com/files/165027/Ionic-Identity-Vault-5.0.4-PIN-Unlock-Lock… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-44033?: CVE-2021-44033 is a medium-severity vulnerability in Ionic Identity Vault, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.8/10. Published 2021-11-19.
How severe is CVE-2021-44033?: Medium severity. CVSS v3 base score is 6.8 out of 10.