CVE-2020-10876

Name: CVE-2020-10876
Creator: NVD / NIST
Published: 2020-05-04T14:15:13.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2020-10876 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The OKLOK (3.1.1) mobile companion app for Fingerprint Bluetooth Padlock FB50 (2.3) does not correctly implement its timeout on the four-digit verification code that is required for resetting passwords, nor does it properly restrict excessive verification attempts. This allows an attacker to brute force the four-digit verification code in order to bypass email verification and change the password of a victim account.. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

The OKLOK (3.1.1) mobile companion app for Fingerprint Bluetooth Padlock FB50 (2.3) does not correctly implement its timeout on the four-digit verification code that is required for resetting passwords, nor does it properly restrict excessive verification attempts. This allows an attacker to brute force the four-digit verification code in order to bypass email verification and change the password of a victim account.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.07%

60.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Oklok Project	Oklok	3.1.1

References

https://apps.apple.com/us/app/oklok/id1392287771Product, Third Party Advisory
https://github.com/fierceoj/ownklokExploit, Third Party Advisory
https://apps.apple.com/us/app/oklok/id1392287771Product, Third Party Advisory
https://github.com/fierceoj/ownklokExploit, Third Party Advisory

Timeline

Published: May 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10876?

How severe is CVE-2020-10876?

CVE-2020-10876 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10876?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10876?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST