Security readout for executives and security teams
Plain-English summary
This flaw can let a malicious EPS or TIFF file compromise a workstation running Adobe Premiere Rush 1.5.16 or earlier. It requires a user to open or import the crafted file, but successful exploitation could run code as that user and affect confidentiality, integrity, and availability.
Executive priority
Treat this as a high-priority endpoint remediation issue, not an internet-exposed server emergency. Prioritize teams likely to open external media assets.
Technical view
CVE-2021-43023 is a memory corruption issue, mapped to CWE-788, in Adobe Premiere Rush handling of malicious EPS/TIFF files. The CVSS 3.0 score is 7.8 with local attack vector, low complexity, no privileges required, and required user interaction.
Likely exposure
Exposure is limited to environments with Adobe Premiere Rush 1.5.16 or earlier, especially creative, marketing, or media workflows that receive external EPS or TIFF files.
Exploitation context
The source bundle does not show KEV listing or active exploitation evidence. Exploitation requires user interaction with a malicious file and executes in the current user context.
Researcher notes
Evidence supports memory corruption leading to arbitrary code execution with required user interaction. The bundle does not provide exploit details, IOCs, or a specific fixed version, so remediation should follow Adobe advisory guidance.
Mitigation direction
- Review Adobe APSB21-101 for vendor remediation guidance.
- Inventory Adobe Premiere Rush installations and versions.
- Prioritize remediation for users handling external EPS or TIFF files.
- Limit opening untrusted EPS/TIFF files until remediation is confirmed.
Validation and detection
- Confirm whether Adobe Premiere Rush 1.5.16 or earlier is installed.
- Check endpoint software inventory against Adobe APSB21-101 guidance.
- Validate controls for handling externally supplied EPS/TIFF media files.
- Confirm affected users have applied the vendor-recommended remediation.
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-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-2021-43023 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 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/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:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/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.