CVE-2021-37232: A stack overflow vulnerability occurs in Atomicparsley 20210124.204813.840499f through APar_read64() in src/ut

Q: How do I fix CVE-2021-37232?

atomicparsley: upgrade to newer than 20210124.204813.840499f. Exact commands for each OS are on this page.

Q: Is CVE-2021-37232 being exploited?

CVE-2021-37232 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-2021-37232 affect?

CVE-2021-37232 affects atomicparsley. Severity is critical (CVSS 9.8). A stack overflow vulnerability occurs in Atomicparsley 20210124.204813.840499f through APar_read64() in src/util.cpp due to the lack of buffer size of uint32_buffer while reading more bytes in APar_read64.

Q: How urgent is CVE-2021-37232?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-37232 is a critical-severity flaw (CVSS 9.8) affecting atomicparsley. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stack overflow vulnerability occurs in Atomicparsley 20210124.204813.840499f through APar_read64() in src/util.cpp due to the lack of buffer size of uint32_buffer while reading more bytes in APar_read64.

Why this priority

Critical severity
Public exploit reference
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	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-787
Published	2021-08-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: atomicparsley project

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

Am I affected?

Timeline

2021-08-04 10:15 UTCPublished CVE record published
2026-06-17 04:00 UTCUpdated Record last modified

atomicparsley project atomicparsley UPGRADE

Affected: <= 20210124.204813.840499f

Fixed in: newer than 20210124.204813.840499f

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 20210124.204813.840499f (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade atomicparsley

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-2021-37232?

atomicparsley: upgrade to newer than 20210124.204813.840499f. Exact commands for each OS are on this page.

Is CVE-2021-37232 being exploited?

CVE-2021-37232 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-2021-37232 affect?

CVE-2021-37232 affects atomicparsley. Severity is critical (CVSS 9.8). A stack overflow vulnerability occurs in Atomicparsley 20210124.204813.840499f through APar_read64() in src/util.cpp due to the lack of buffer size of uint32_buffer while reading more bytes in APar_read64.

How urgent is CVE-2021-37232?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-37231 MEDIUM 5.5 DOWNGRADE A stack-buffer-overflow occurs in Atomicparsley 20210124.204813.840499f through APar_readX() in src/util.cpp w

References

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