CVE-2021-37786

Name: CVE-2021-37786
Creator: NVD / NIST
Published: 2021-09-27T14:15:08.583+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.6/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2021-37786 is a medium-severity vulnerability rated 4.6/10 on the CVSS scale. Certain Federal Office of Information Technology Systems and Telecommunication FOITT products are affected by improper handling of exceptional conditions. This affects COVID Certificate App IOS 2.2.0 and below affected, patch in progress and COVID Certificate Check App IOS 2.2.0 and below affected, patch in progress. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Certain Federal Office of Information Technology Systems and Telecommunication FOITT products are affected by improper handling of exceptional conditions. This affects COVID Certificate App IOS 2.2.0 and below affected, patch in progress and COVID Certificate Check App IOS 2.2.0 and below affected, patch in progress. A denial of service (physically proximate) could be caused by scanning a crafted QR code.

Metrics

CVSS 3.1

4.6/10

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

EPSS Probability

0.19%

8.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-755

Affected Software

Vendor	Product	Versions
Bag	Covid Certificate	<= 2.2.0

References

https://github.com/admin-ch/CovidCertificate-App-iOS/issues/146Exploit, Issue Tracking, Third Party Advisory
https://github.com/admin-ch/CovidCertificate-App-iOS/issues/146Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Sep 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37786?

How severe is CVE-2021-37786?

CVE-2021-37786 has a CVSS score of 4.6/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37786?

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-2021-37786?

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

Scan your code now

Source: NVD / NIST