What is CVE-2020-29392?

CVE-2020-29392 is a medium-severity vulnerability in Lock Password Manager Safe App Project, classified under Improper Authentication. CVSS score: 4.6/10. Published 2020-11-30.

How severe is CVE-2020-29392?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Auth bypass in Lock Password Manager Safe App Project

CVE-2020-29392

The Estil Hill Lock Password Manager Safe app 2.3 for iOS has a *#06#* backdoor password. An attacker with physical access can unlock the password manager without knowing the master password set by the user.

Vulnerability class: Broken Authentication

Published 2020-11-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (33.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Lock Password Manager Safe App Project — versions 2.3

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

i.blackhat.com/asia-20/Friday/asia-20-Loke-Patching-Loopholes-Finding-Backdoors… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-29392?: CVE-2020-29392 is a medium-severity vulnerability in Lock Password Manager Safe App Project, classified under Improper Authentication. CVSS score: 4.6/10. Published 2020-11-30.
How severe is CVE-2020-29392?: Medium severity. CVSS v3 base score is 4.6 out of 10.