Security readout for executives and security teams
Plain-English summary
This vulnerability affects an Adobe Creative Cloud Desktop installer and could let a malicious file run code as the signed-in user. It is not described as remotely exploitable by itself; the victim must open a malicious file. Business risk is mainly workstation compromise, data exposure, and follow-on activity under user privileges.
Executive priority
Prioritize remediation for managed workstations and software distribution locations. The issue needs user interaction, which lowers immediacy compared with internet-facing exploitation, but successful compromise can run code as the user and may enable broader endpoint intrusion.
Technical view
CVE-2021-28594 is a CWE-427 uncontrolled search path issue in Adobe Creative Cloud Desktop Application installer version 2.4 and earlier. CVSS is 7.8 high, with local attack vector, low complexity, no privileges required, and user interaction required. Successful exploitation can provide arbitrary code execution in the current user context.
Likely exposure
Exposure is most likely where legacy Adobe Creative Cloud Desktop installer version 2.4 or earlier exists on endpoints, software shares, or deployment tooling. The bundle also lists Adobe Prelude metadata, but the description and Adobe reference focus on the Creative Cloud Desktop installer, so product mapping should be verified.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires user interaction: a victim must open a malicious file. The impact is high because code execution can affect confidentiality, integrity, and availability within the current user's permissions.
Researcher notes
Evidence supports CWE-427 uncontrolled search path behavior, local attack vector, no required privileges, and required user interaction. Do not infer remote exploitation or active exploitation from the bundle. The affected product metadata appears inconsistent, so validate Adobe bulletin details before scoping beyond Creative Cloud Desktop installer 2.4 and earlier.
Mitigation direction
- Review Adobe APSB21-41 and apply the vendor-recommended update or remediation.
- Inventory and remove legacy Creative Cloud Desktop installer version 2.4 or earlier.
- Block use of untrusted installer files from email, downloads, or shared folders.
- Limit standard users' ability to execute software from writable directories.
- Treat uncertain Adobe Prelude exposure as a validation item, not a confirmed fix target.
Validation and detection
- Check endpoint inventory for Creative Cloud Desktop installer version 2.4 or earlier.
- Search software repositories and deployment systems for retained legacy installer packages.
- Verify remediation status against Adobe APSB21-41, not only local package names.
- Confirm no business process depends on launching old Adobe installer packages.
- Record any affected hosts, user groups, and remediation exceptions.
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-427: 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-2021-28594 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/creative-cloud/apsb21-41.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.
Uncontrolled Search Path Element
Uncontrolled Search Path Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.