CVE-2021-41459

CVE-2021-41459 is a high-severity vulnerability in Gpac Mp4box 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-787.

Key facts

Description

There is a stack buffer overflow in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1008 in the nhmldmx_send_sample() function szXmlFrom parameter which leads to a denial of service vulnerability.

Frequently asked questions

What is CVE-2021-41459?
There is a stack buffer overflow in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1008 in the nhmldmx_send_sample() function szXmlFrom parameter which leads to a denial of service vulnerability.
How severe is CVE-2021-41459?
CVE-2021-41459 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-2021-41459 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41459?
CVE-2021-41459 affects Gpac Mp4box. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41459?
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-2021-41459 published?
CVE-2021-41459 was published on 2021-10-01 and last updated on 2026-06-17.

References

Affected products (1)

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