Security readout for executives and security teams
Plain-English summary
CVE-2021-40795 is a high-severity Adobe Premiere Pro flaw triggered when a user opens a malicious 3GP media file. Successful exploitation could run code as the current user, putting workstation data and creative environments at risk.
Executive priority
Treat as a high-priority workstation patch for creative and media-handling teams. It is not supported as actively exploited in the provided sources, but code execution through a malicious file creates meaningful business risk.
Technical view
Adobe describes a CWE-125 out-of-bounds read in Premiere Pro 3GP file parsing. Versions 22.0 and earlier, and 15.4.2 and earlier, are affected. The CVSS 3.1 score is 7.8 with user interaction required and potential confidentiality, integrity, and availability impact.
Likely exposure
Exposure is mainly desktop systems running affected Adobe Premiere Pro versions, especially users who receive, download, or import external media files. Server-side exposure is not indicated by the sources.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. Exploitation requires a victim to open a malicious file, so phishing or shared-media workflows are the likely delivery context.
Researcher notes
Key constraints are AV:L, PR:N, UI:R, and S:U. The vulnerability is tied to 3GP parsing in Adobe Premiere Pro. No exploit details, proof-of-concept status, or alternative mitigations are provided in the source bundle.
Mitigation direction
- Update Adobe Premiere Pro to a release not listed as affected by Adobe.
- Review Adobe APSB21-117 for the vendor-approved update path.
- Limit opening untrusted 3GP files until affected systems are remediated.
- Prioritize workstations used to process externally supplied media.
Validation and detection
- Inventory Adobe Premiere Pro installations and versions across managed endpoints.
- Confirm no systems remain on 22.0 or earlier, or 15.4.2 or earlier.
- Check creative-team workflows for externally sourced 3GP media handling.
- Verify endpoint controls cover suspicious media-file delivery and execution attempts.
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.
CWE-125: 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-2021-40795 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_pro/apsb21-117.htmlCVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.