CVE-2021-37786: Certain Federal Office of Information Technology Systems and Telecommunication FOITT products are affected by

Q: How do I fix CVE-2021-37786?

covid certificate: upgrade to newer than 2.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-37786 being exploited?

CVE-2021-37786 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-37786 affect?

CVE-2021-37786 affects covid certificate. Severity is medium (CVSS 4.6). 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 an

Q: How urgent is CVE-2021-37786?

Priority 23/100. Public exploit reference

Routine

MEDIUM 4.6UPGRADE

CVE-2021-37786 is a medium-severity flaw (CVSS 4.6) affecting covid certificate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-755
Published	2021-09-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bag

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-27 14:15 UTCPublished CVE record published
2026-06-17 04:01 UTCUpdated Record last modified

bag covid certificate UPGRADE

Affected: <= 2.2.0

Fixed in: newer than 2.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy covid-certificate || rpm -q covid-certificate || covid-certificate --version

2. UPGRADE to newer than 2.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade covid-certificate

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade covid-certificate

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-37786?

covid certificate: upgrade to newer than 2.2.0. Exact commands for each OS are on this page.

Is CVE-2021-37786 being exploited?

CVE-2021-37786 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-37786 affect?

CVE-2021-37786 affects covid certificate. Severity is medium (CVSS 4.6). 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 an

How urgent is CVE-2021-37786?

Priority 23/100. Public exploit reference

Software pages

iOS vulnerabilities

References

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