Security readout for executives and security teams
Plain-English summary
This flaw can make vulnerable GPAC media-processing software hang when it opens a specially crafted MP4 file. The known impact is denial of service, not data theft or code execution. Business urgency is highest where GPAC processes untrusted media automatically or at scale.
Executive priority
Treat this as a targeted availability risk. Prioritize patching externally fed media-processing systems first, then desktop or internal-only installations. It is lower urgency than remote code execution unless GPAC supports critical ingestion services.
Technical view
CVE-2021-40592 is an infinite-loop flaw in GPAC's ISOBMFF reader filter, specifically isoffin_read.c in isoffin_process(). Sources describe GPAC v1.0.1 onward before commit 71460d72ec07df766dab0a4d52687529f3efcf0a as affected. Triggering requires opening a crafted MP4 file.
Likely exposure
Exposure is most likely in systems with GPAC installed that parse MP4 files, especially media conversion, inspection, or ingestion workflows accepting external files. The source bundle does not identify specific downstream products or CPEs.
Exploitation context
No CISA KEV listing or provided source states active exploitation. The attack path requires a victim system or workflow to open a crafted MP4, causing an availability impact through an infinite loop.
Researcher notes
Evidence is limited to the CVE description, GPAC issue and commit, and Debian advisory. No CVSS, CWE, CPE, exploit status, or precise release mapping beyond v1.0.1 onward before the referenced commit is provided.
Mitigation direction
- Update GPAC to a build containing commit 71460d72ec07df766dab0a4d52687529f3efcf0a.
- Apply Debian fixed packages referenced by DSA-5411 where Debian packages are used.
- Restrict GPAC processing of untrusted MP4 files until patched.
- Check vendor or distribution guidance for backported fixes.
- Run media-processing workloads with timeouts and resource limits.
Validation and detection
- Inventory systems and containers for GPAC installations.
- Confirm GPAC builds include the referenced fixing commit or vendor backport.
- Identify workflows that process MP4 files from external users or partners.
- Review media pipeline monitoring for repeated GPAC hangs or stalled jobs.
- Verify Debian hosts have applied DSA-5411 fixed packages where applicable.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
CVE-2021-40592 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/gpac/gpac/commit/71460d72ec07df766dab0a4d52687529f3efcf0aCVE reference
- https://github.com/gpac/gpac/issues/1876CVE reference
- DSA-5411CVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.