CVE-2021-41456
CVE-2021-41456 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
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Gpac Mp4box
- Published:
- Last modified:
Description
There is a stack buffer overflow in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1004 in the nhmldmx_send_sample() function szXmlTo parameter which leads to a denial of service vulnerability.
Frequently asked questions
- What is CVE-2021-41456?
- There is a stack buffer overflow in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1004 in the nhmldmx_send_sample() function szXmlTo parameter which leads to a denial of service vulnerability.
- How severe is CVE-2021-41456?
- CVE-2021-41456 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-2021-41456 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-41456?
- CVE-2021-41456 affects Gpac Mp4box. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-41456?
- 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-2021-41456 published?
- CVE-2021-41456 was published on 2021-10-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:gpac:mp4box:1.0.1:*:*:*:*:*:*:*
More vulnerabilities in Gpac Mp4box
- CVE-2021-41459 — High (CVSS 7.5): There is a stack buffer overflow in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1008 in the nhmldmx_send_sample() function…
- CVE-2021-41457 — High (CVSS 7.5): There is a stack buffer overflow in MP4Box 1.1.0 at src/filters/dmx_nhml.c in nhmldmx_init_parsing which leads to a…
- CVE-2021-41458 — Medium (CVSS 5.5): In GPAC MP4Box v1.1.0, there is a stack buffer overflow at src/utils/error.c:1769 which leads to a denial of service…
All CVEs affecting Gpac Mp4box →
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