CVE-2021-28037: An issue was discovered in the internment crate before 0.4.2 for Rust

Q: How do I fix CVE-2021-28037?

internment: upgrade to 0.4.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-28037 being exploited?

CVE-2021-28037 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-2021-28037 affect?

CVE-2021-28037 affects internment. Severity is critical (CVSS 9.8). An issue was discovered in the internment crate before 0.4.2 for Rust. There is a data race that can cause memory corruption because of the unconditional implementation of Sync for Intern .

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-28037 is a critical-severity flaw (CVSS 9.8) affecting internment. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the internment crate before 0.4.2 for Rust. There is a data race that can cause memory corruption because of the unconditional implementation of Sync for Intern<T>.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2021-03-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: internment project

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

Am I affected?

Timeline

2021-03-05 09:15 UTCPublished CVE record published
2026-06-17 03:45 UTCUpdated Record last modified

internment project internment UPGRADE

Affected: < 0.4.2

Fixed in: 0.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy internment || rpm -q internment || internment --version

2. UPGRADE to 0.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade internment

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade internment

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-2021-28037?

internment: upgrade to 0.4.2. Exact commands for each OS are on this page.

Is CVE-2021-28037 being exploited?

CVE-2021-28037 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-2021-28037 affect?

CVE-2021-28037 affects internment. Severity is critical (CVSS 9.8). An issue was discovered in the internment crate before 0.4.2 for Rust. There is a data race that can cause memory corruption because of the unconditional implementation of Sync for Intern<T>.

How urgent is CVE-2021-28037?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-35874 HIGH 8.1 DOWNGRADE An issue was discovered in the internment crate through 2020-05-28 for Rust

References

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