CVE-2021-37222: Parsers in the open source project RCDCAP before 1.0.5 allow remote attackers to execute arbitrary code or cau

Q: How do I fix CVE-2021-37222?

rcdcap: upgrade to 1.0.5. Exact commands for each OS are on this page.

Q: Is CVE-2021-37222 being exploited?

CVE-2021-37222 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-2021-37222 affect?

CVE-2021-37222 affects rcdcap. Severity is critical (CVSS 9.8). Parsers in the open source project RCDCAP before 1.0.5 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via specially crafted packets.

Q: How urgent is CVE-2021-37222?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-37222 is a critical-severity flaw (CVSS 9.8) affecting rcdcap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Parsers in the open source project RCDCAP before 1.0.5 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via specially crafted packets.

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	2.5% (top 15%)
CISA exploited list	No
Published	2021-08-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: rcdcap project

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

Am I affected?

Timeline

2021-08-12 11:15 UTCPublished CVE record published
2026-06-17 04:00 UTCUpdated Record last modified

rcdcap project rcdcap UPGRADE

Affected: < 1.0.5

Fixed in: 1.0.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.0.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rcdcap

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-2021-37222?

rcdcap: upgrade to 1.0.5. Exact commands for each OS are on this page.

Is CVE-2021-37222 being exploited?

CVE-2021-37222 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-2021-37222 affect?

CVE-2021-37222 affects rcdcap. Severity is critical (CVSS 9.8). Parsers in the open source project RCDCAP before 1.0.5 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via specially crafted packets.

How urgent is CVE-2021-37222?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

References

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