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PatchSiren cyber security CVE debrief

CVE-2025-60476 GPAC Project CVE debrief

A heap use-after-free vulnerability exists in the gf_odf_ac4_cfg_clean_list function of GPAC Project/MP4Box before version 2.5. This vulnerability allows attackers to cause a Denial of Service (DoS) by supplying a crafted AC4 file. The vulnerability is caused by a use-after-free error in the gf_odf_ac4_cfg_clean_list function, which can be triggered by a specially crafted AC4 file. This can lead to a Denial of Service (DoS) attack, which can cause significant disruption to media processing services.

Vendor
GPAC Project
Product
MP4Box
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-21
Original CVE updated
2026-10-26
Advisory published
2026-10-21
Advisory updated
2026-10-26

Who should care

Defenders responsible for GPAC Project/MP4Box deployments should assess exposure and prioritize verification of the version in use. This includes operators, security teams, and vulnerability management teams who are responsible for ensuring the security and integrity of media processing services. Additionally, defenders should review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

Defenders should prioritize verifying the version of GPAC Project/MP4Box in use and assessing exposure to crafted AC4 files to prevent potential Denial of Service (DoS) attacks.

  • Denial of Service (DoS) via crafted AC4 files
  • Potential disruption of media processing services
  • Need for version verification and potential upgrades

Technical summary

A heap use-after-free vulnerability exists in the gf_odf_ac4_cfg_clean_list function of GPAC Project/MP4Box before version 2.5. This vulnerability allows attackers to cause a Denial of Service (DoS) by supplying a crafted AC4 file. The vulnerability is caused by a use-after-free error in the gf_odf_ac4_cfg_clean_list function, which can be triggered by a specially crafted AC4 file. This can lead to a Denial of Service (DoS) attack, which can cause significant disruption to media processing services. The vulnerability can be mitigated by verifying the version of GPAC Project/MP4Box in use and assessing exposure to crafted AC4 files.

Defensive priority

Defenders should prioritize verifying the version of GPAC Project/MP4Box in use and assessing exposure to crafted AC4 files.

Recommended defensive actions

  • Verify the version of GPAC Project/MP4Box in use
  • Assess exposure to crafted AC4 files
  • Consider upgrading to version 2.5 or later
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide information on the vulnerability, but details on affected versions and remediation are limited. The vulnerability was discovered in GPAC Project/MP4Box before version 2.5. The source item and CVE record do not provide explicit evidence of exploitation or affected deployments. However, defenders should verify the version of GPAC Project/MP4Box in use and assess exposure to crafted AC4 files.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-60476 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-60476

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-60476 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-60476

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • CVE-2025-60476

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/60xxx/CVE-2025-60476.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://github.com/gpac/gpac/commit/e02d1fd24cdc26acb1b236ab38b3832cffcae21b

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://github.com/gpac/gpac/issues/3293

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/42/README.md

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://infosec.exchange/@sigdevel/117456471347684902

    Supplemental source

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.