How severe is CVE-2021-40609?

CVE-2021-40609 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-2021-40609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40609?

CVE-2021-40609 affects Gpac. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40609?

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

When was CVE-2021-40609 published?

CVE-2021-40609 was published on 2022-06-28 and last updated on 2026-06-17.

CVE-2021-40609

CVE-2021-40609 is a medium-severity vulnerability in Gpac 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Gpac
Published: 2022-06-28
Last modified: 2026-06-17

Description

The GetHintFormat function in GPAC 1.0.1 allows attackers to cause a denial of service via a crafted file in the MP4Box command.

Frequently asked questions

What is CVE-2021-40609?: The GetHintFormat function in GPAC 1.0.1 allows attackers to cause a denial of service via a crafted file in the MP4Box command.
How severe is CVE-2021-40609?: CVE-2021-40609 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-2021-40609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40609?: CVE-2021-40609 affects Gpac. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40609 published?: CVE-2021-40609 was published on 2022-06-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*

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