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TI-2021-18237 Aliases CVE-2021-41456GHSA-grp9-gmxg-jj85

There is a stack buffer overflow in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1004 in the…

Priority LOW 35CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.01289 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gpac:mp4box:1.0.1:*:*:*:*:*:*:*1.0.1Vulnerablegpac
  • cpe:2.3:a:gpac:mp4box:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·gpac

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41456
  2. 2026-10-03 Alias added: GHSA-grp9-gmxg-jj85

References

Exploit 1

Advisory 1

  • TI-2021-18240 There is a stack buffer overflow in MP4Box v1.0.1 at src/filters/dmx_nhml.c:1008 in the… CVSS 3.1HIGH 7.5
  • TI-2021-18238 There is a stack buffer overflow in MP4Box 1.1.0 at src/filters/dmx_nhml.c in… CVSS 3.1HIGH 7.5
  • TI-2021-18239 In GPAC MP4Box v1.1.0, there is a stack buffer overflow at src/utils/error.c:1769 which… CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences