How severe is CVE-2021-37231?

CVE-2021-37231 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-37231 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37231?

CVE-2021-37231 affects Atomicparsley Project Atomicparsley. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37231?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37231 published?

CVE-2021-37231 was published on 2021-08-04 and last updated on 2026-06-17.

CVE-2021-37231

CVE-2021-37231 is a medium-severity vulnerability in Atomicparsley Project Atomicparsley with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Atomicparsley Project Atomicparsley
Published: 2021-08-04
Last modified: 2026-06-17

Description

A stack-buffer-overflow occurs in Atomicparsley 20210124.204813.840499f through APar_readX() in src/util.cpp while parsing a crafted mp4 file because of the missing boundary check.

Frequently asked questions

What is CVE-2021-37231?: A stack-buffer-overflow occurs in Atomicparsley 20210124.204813.840499f through APar_readX() in src/util.cpp while parsing a crafted mp4 file because of the missing boundary check.
How severe is CVE-2021-37231?: CVE-2021-37231 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-37231 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37231?: CVE-2021-37231 affects Atomicparsley Project Atomicparsley. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37231?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37231 published?: CVE-2021-37231 was published on 2021-08-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:atomicparsley_project:atomicparsley:20210124.204813.840499f:*:*:*:*:*:*:*

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