Security readout for executives and security teams
Plain-English summary
This vulnerability can crash Adobe Premiere Rush when a user opens a malicious file. It does not indicate data theft, privilege gain, or remote takeover. Business impact is mainly disruption to affected creative workstations and possible workflow interruption if users handle files from untrusted sources.
Executive priority
Treat as a moderate workstation availability issue. Prioritize creative teams or users processing third-party media, but this is lower urgency than vulnerabilities enabling remote code execution or data compromise.
Technical view
CVE-2021-43749 is a CWE-476 NULL pointer dereference in Adobe Premiere Rush 1.5.16 and earlier. CVSS 3.1 is 5.5 with local attack vector, no privileges required, user interaction required, and high availability impact only.
Likely exposure
Exposure is limited to systems running Adobe Premiere Rush 1.5.16 or earlier, especially users who open externally supplied or untrusted files in Premiere Rush.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires user interaction: a victim must open a malicious file locally.
Researcher notes
The provided evidence identifies the bug class, affected product, affected version boundary, and interaction requirement. It does not include exploit code, active exploitation evidence, or a fixed version in the source bundle.
Mitigation direction
- Review Adobe APSB21-101 for vendor-approved update guidance.
- Upgrade or remove Premiere Rush 1.5.16 and earlier where present.
- Limit opening untrusted files in Premiere Rush until remediated.
- Use endpoint software inventory to find affected installations.
Validation and detection
- Inventory endpoints for Adobe Premiere Rush versions.
- Confirm no installed Premiere Rush version is 1.5.16 or earlier.
- Check crash telemetry for Premiere Rush denial-of-service symptoms.
- Verify users handling external media have updated systems.
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-476: 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 lookupCVE-2021-43749 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.