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CVE Record

CVE-2026-9572: GPAC MP4Box media.c Media_GetSample memory leak

A security vulnerability has been detected in GPAC up to 2.4.0. Affected by this issue is the function Media_GetSample of the file src/isomedia/media.c of the component MP4Box. Such manipulation of the argument cat leads to memory leak. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. The name of the patch is e79c5cbe8b3fed27f4854ec229457d30c96206f1. It is best practice to apply a patch to resolve this issue.

MediumCVSS 4.8Not KEV-listed Updated
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Glexia's Take moderate

Analyst readout for executives and security teams

Plain-English summary

GPAC MP4Box up to 2.4.0 has a memory leak in media sample handling. A local, low-privileged user could trigger extra memory consumption and reduce availability. This is not a remote takeover issue, but it matters where MP4Box runs in media processing workflows.

Executive priority

Treat as a moderate operational risk. Patch during the next normal remediation cycle, faster for shared media-processing systems. Escalate only if GPAC is used in critical automated workflows where memory exhaustion could disrupt service.

Technical view

CVE-2026-9572 affects GPAC MP4Box Media_GetSample in src/isomedia/media.c. Manipulating the cat argument can cause a memory leak. The CVSS 4.0 score is 4.8, with local access, low complexity, low privileges, no user interaction, and low availability impact.

Likely exposure

Exposure is most likely on endpoints, servers, or build/media-processing environments running GPAC or MP4Box versions 2.0 through 2.4.0. The source bundle only identifies local attack conditions, so internet-facing exposure is not established.

Exploitation context

The bundle says an exploit has been publicly disclosed and may be used. KEV is false, and no provided source confirms active exploitation in the wild. The required local access and low availability impact keep urgency below high severity.

Researcher notes

Evidence points to CWE-401 and CWE-404 memory-resource handling weakness in Media_GetSample. Public exploit availability is referenced, but active exploitation is not evidenced. The provided data does not establish remote reachability or broader GPAC component impact.

Mitigation direction

  • Identify GPAC and MP4Box installations and versions across managed systems.
  • Apply the vendor patch identified as commit e79c5cbe8b3fed27f4854ec229457d30c96206f1.
  • If packaged updates are unavailable, check GPAC guidance before backporting the patch.
  • Limit local access to systems running affected GPAC tooling.
  • Prioritize systems that process media in automated or shared workflows.

Validation and detection

  • Confirm whether GPAC or MP4Box is installed and whether versions are 2.0 through 2.4.0.
  • Verify the patch commit or a vendor-fixed build is present.
  • Review local job runners or media pipelines that invoke MP4Box.
  • Monitor affected hosts for abnormal memory growth during MP4Box processing.
Prepared
Confidence
medium
Sources
7

Public sources used

Based on public source material and reviewed before publication.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-401: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cwe · low confidence lookup

CWE-404: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-9572 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profile CVE Program record
Severity
Medium
CVSS
4.8 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

4 CVSS vectors
6 Timeline events
0 ADP providers
8 Source links

CVSS vector scores

4 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

Score Version Severity Vector Exploit Impact Source
4.8 CVSS 4.0 Medium CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P — — VulDB
3.3 CVSS 3.1 Low CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C 1.8 1.4 VulDB
3.3 CVSS 3.0 Low CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C 1.8 1.4 VulDB
1.7 CVSS 2.0 Low AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C 3.1 2.9 VulDB

Vulnerability scoring details

Base CVSS 4.0 score

4.8 Medium
CVSS 4.0 vector shape for CVE-2026-9572 Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timeline VulDB

    Advisory disclosed

  2. Source timeline VulDB

    VulDB entry created

  3. CVE reserved CVE Program

    The CVE ID was reserved by the assigning CNA.

  4. Source timeline VulDB

    VulDB entry last update

  5. CVE published CVE Program

    The CVE record was published.

  6. CVE updated CVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

Vendor Product Version / package Status
n/a GPAC 2.0, 2.1, 2.2, 2.3, 2.4.0 Listed
Weakness

CWE details

CWE-401CWE-404

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-401 · source CWE mapping

Missing Release of Memory after Effective Lifetime

Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligence Same-CWE CVEs
CWE-404 · source CWE mapping

Improper Resource Shutdown or Release

Improper Resource Shutdown or Release represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligence Same-CWE CVEs