CVE-2021-32773: Racket is a general-purpose programming language and an ecosystem for language-oriented programming

Q: How do I fix CVE-2021-32773?

racket: upgrade to 8.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-32773 being exploited?

CVE-2021-32773 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-2021-32773 affect?

CVE-2021-32773 affects racket. Severity is medium (CVSS 6.1). Racket is a general-purpose programming language and an ecosystem for language-oriented programming. In versions prior to 8.2, code evaluated using the Racket sandbox could cause system modules to incorrectly use attacker-created modules in

Q: How urgent is CVE-2021-32773?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2021-32773 is a medium-severity flaw (CVSS 6.1) affecting racket. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Racket is a general-purpose programming language and an ecosystem for language-oriented programming. In versions prior to 8.2, code evaluated using the Racket sandbox could cause system modules to incorrectly use attacker-created modules instead of their intended dependencies. This could allow system functions to be controlled by the attacker, giving access to facilities intended to be restricted. This problem is fixed in Racket version 8.2. A wo

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-441, CWE-610
Published	2021-07-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: racket-lang

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

Am I affected?

Timeline

2021-07-20 00:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

racket-lang racket UPGRADE

Affected: < 8.2

Fixed in: 8.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 8.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade racket

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-2021-32773?

racket: upgrade to 8.2. Exact commands for each OS are on this page.

Is CVE-2021-32773 being exploited?

CVE-2021-32773 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-2021-32773 affect?

CVE-2021-32773 affects racket. Severity is medium (CVSS 6.1). Racket is a general-purpose programming language and an ecosystem for language-oriented programming. In versions prior to 8.2, code evaluated using the Racket sandbox could cause system modules to incorrectly use attacker-created modules in

How urgent is CVE-2021-32773?

Priority 36/100. No elevated risk signals yet.

References

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