Security readout for executives and security teams
Plain-English summary
CVE-2021-28581 is a high-severity local privilege escalation issue in Adobe Creative Cloud Desktop 3.5 and earlier. It could let a lower-privileged local user gain elevated control, but the published description requires user interaction: the victim must log on to the attacker’s local machine.
Executive priority
Treat this as a high-priority endpoint hygiene issue, not an internet-facing emergency. Remediate affected Creative Cloud installations through normal vulnerability management, with faster handling for shared systems and privileged-user workstations.
Technical view
The issue is CWE-427, an uncontrolled search path element vulnerability in Adobe Creative Cloud Desktop. CVSS 3.0 is 7.3 with local attack vector, low complexity, low privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on endpoints running Adobe Creative Cloud Desktop 3.5 or earlier. Shared workstations, lab machines, contractor devices, and systems where users log on to machines they do not control deserve attention.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The attack is local and interactive, so it is less broadly wormable, but successful exploitation could materially increase attacker control on an affected host.
Researcher notes
Evidence is limited to the CVE record and Adobe advisory reference. The record identifies CWE-427 and local privilege escalation with user interaction. Do not assume remote exploitability, active exploitation, or a specific fixed version unless confirmed in Adobe’s advisory.
Mitigation direction
- Inventory Adobe Creative Cloud Desktop installations across managed endpoints.
- Check Adobe APSB21-31 for the vendor’s applicable update or remediation guidance.
- Prioritize remediation on shared, creative, lab, and administrator-used workstations.
- Restrict users from logging on to untrusted or attacker-controlled local machines.
- Remove unsupported or unnecessary Creative Cloud Desktop installations.
Validation and detection
- Confirm whether any endpoint runs Creative Cloud Desktop 3.5 or earlier.
- Map vulnerability scanner findings specifically to CVE-2021-28581.
- Verify remediated hosts no longer report the vulnerable Creative Cloud Desktop version.
- Review endpoint ownership and shared-login patterns for higher-risk exposure.
- Document exceptions where Adobe guidance cannot yet be applied.
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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-28581 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
- 7.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:L/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:L/UI:R/S:U/C:H/I:H/A:H1.35.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.3HighVector: CVSS:3.0/AV:L/AC:L/PR:L/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/apsb21-31.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.