Security readout for executives and security teams
Plain-English summary
This vulnerability affects Adobe Premiere Rush 1.5.16 and earlier. A malicious M4A audio file could corrupt memory and let code run as the user who opens it. It requires user interaction, so business risk centers on creative workstations and users handling media from external or untrusted sources.
Executive priority
Treat this as a targeted workstation risk rather than a network-wide emergency. Prioritize teams that receive external media, because compromise could run code with the user's access and affect confidentiality, integrity, and availability on that workstation.
Technical view
CVE-2021-43029 is a CWE-788 memory corruption flaw in Adobe Premiere Rush caused by insecure handling of crafted M4A files. The CVSS 3.1 score is 7.8 with local attack vector, low complexity, no privileges required, and required user interaction. Successful exploitation may enable arbitrary code execution in the current user's context.
Likely exposure
Exposure is most likely on endpoints running Adobe Premiere Rush 1.5.16 or earlier, especially where users import or open M4A files received externally. The source bundle does not identify affected operating systems, enterprise configurations, or CPEs.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires a user to open or process a malicious M4A file, making phishing, file-sharing, and media supply workflows the relevant threat paths.
Researcher notes
The bundle supports affected version 1.5.16 and earlier, CVSS 7.8, CWE-788, required user interaction, and arbitrary code execution impact. It does not provide exploit-in-the-wild evidence, exact fixed version details, CPEs, or deeper root-cause detail beyond M4A handling memory corruption.
Mitigation direction
- Review Adobe APSB21-101 for vendor remediation guidance and fixed versions.
- Update Adobe Premiere Rush where Adobe provides a corrected release.
- Prioritize creative workstations handling external media files.
- Limit opening M4A files from untrusted sources until remediated.
- Use endpoint controls to reduce impact of user-context code execution.
Validation and detection
- Inventory endpoints for Adobe Premiere Rush installations.
- Identify versions at or below 1.5.16.
- Confirm whether Adobe APSB21-101 remediation has been applied.
- Review email, download, and media-ingest workflows for untrusted M4A exposure.
- Check security tooling for suspicious activity involving Premiere Rush processes.
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
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CWE-788: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-43029 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/premiere_rush/apsb21-101.htmlCVE reference · x_refsource_MISC
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.
Access of Memory Location After End of Buffer
Access of Memory Location After End of Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.