CVE-2026-95121 Details
Description
An issue in mp4v2 2.0.0 allows an attacker to execute arbitrary code via the MP4RtpAtom::ReadHntiType() in src/atom_rtp.cpp. A specially crafted MP4 file can cause an undersized rtp atom to produce a near-2^64 allocation size through an unchecked offset subtraction
A vulnerability in mp4v2 version 2.0.0 allows for arbitrary code execution due to an integer underflow in the MP4RtpAtom::ReadHntiType() function. This issue arises when a specially crafted MP4 file contains an undersized RTP atom within an HNTI container, causing an unchecked offset subtraction that underflows and results in a near-2^64 memory allocation. The excessive allocation size is passed to MP4Malloc(), leading to a denial-of-service condition.
Users can update to the patched version of mp4v2, which is available in the TechSmith/mp4v2 repository on GitHub.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 13, 2026CISA-ADP
Assessed Oct 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/TechSmith/mp4v2/issues/98 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://gist.github.com/1820893135-pixel/c56b6a1627453e67ca2fb7e29bae95c6 | [email protected] | Technical Description |
| https://github.com/TechSmith/mp4v2/issues/98 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/TechSmith/mp4v2/pull/100 | [email protected] | Issue TrackingVendor |
| https://github.com/TechSmith/mp4v2/pull/100/changes/c7f4e1da1b75996a053b05b69be8e738bf77a26c | [email protected] | Source CodeVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-190 | Integer Overflow or Wraparound | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mp4v2 | 2.0.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 14, 2026 | CVE Modified | CISA-ADP |
| Oct 13, 2026 | New CVE Received | [email protected] |