What is CVE-2021-40941?

In Bento4 1.6.0-638, there is an allocator is out of memory in the function AP4_Array ::EnsureCapacity in Ap4Array.h:172, as demonstrated by GPAC. This can cause a denial of service (DOS).

How severe is CVE-2021-40941?

CVE-2021-40941 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-40941 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40941?

CVE-2021-40941 affects Axiosys Bento4. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40941?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-40941 published?

CVE-2021-40941 was published on 2022-06-27 and last updated on 2026-06-17.

CVE-2021-40941

CVE-2021-40941 is a high-severity vulnerability in Axiosys Bento4 with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Axiosys Bento4
Published: 2022-06-27
Last modified: 2026-06-17

Description

In Bento4 1.6.0-638, there is an allocator is out of memory in the function AP4_Array<AP4_TrunAtom::Entry>::EnsureCapacity in Ap4Array.h:172, as demonstrated by GPAC. This can cause a denial of service (DOS).

Frequently asked questions

What is CVE-2021-40941?: In Bento4 1.6.0-638, there is an allocator is out of memory in the function AP4_Array<AP4_TrunAtom::Entry>::EnsureCapacity in Ap4Array.h:172, as demonstrated by GPAC. This can cause a denial of service (DOS).
How severe is CVE-2021-40941?: CVE-2021-40941 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-40941 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40941?: CVE-2021-40941 affects Axiosys Bento4. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40941?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40941 published?: CVE-2021-40941 was published on 2022-06-27 and last updated on 2026-06-17.

References

https://github.com/axiomatic-systems/Bento4/issues/644

Affected products (1)

cpe:2.3:a:axiosys:bento4:1.6.0-638:*:*:*:*:*:*:*

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