Security readout for executives and security teams
Plain-English summary
This is a high-severity Adobe After Effects issue where a malicious file could lead to code running as the logged-in user. The victim must open the file, and exploitation depends on chaining with JavaScript development/debugging tooling. Creative teams handling external After Effects content are the most relevant business concern.
Executive priority
Prioritize remediation for creative, marketing, and production workstations that process third-party After Effects files. The issue is high impact but requires user action and a specific chaining condition, so urgency should be risk-based rather than emergency-level absent exploitation evidence.
Technical view
CVE-2021-28571 is a CWE-78 command injection flaw in Adobe After Effects 18.1 and earlier. The CVSS 3.1 score is 8.3, with network attack vector, high attack complexity, no privileges required, required user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on endpoints running Adobe After Effects 18.1 or earlier, especially where users open externally supplied After Effects files and have relevant JavaScript debugging/development tooling installed.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires user interaction: a victim must open a malicious file. The available description also says the issue is used when chained with JavaScript development/debugging tooling.
Researcher notes
Key constraints are important: affected versions are stated as After Effects 18.1 and earlier, exploitation requires opening a malicious file, and the command injection is described as chained with JavaScript development/debugging tooling. Public source evidence here does not confirm exploitation in the wild.
Mitigation direction
- Inventory Adobe After Effects installations and identify versions 18.1 or earlier.
- Review Adobe APSB21-33 and apply vendor guidance for affected systems.
- Limit opening After Effects files from untrusted or unsolicited sources.
- Reduce unnecessary JavaScript development/debugging tooling on creative workstations.
- Use endpoint controls to monitor suspicious child processes from creative applications.
Validation and detection
- Confirm installed After Effects versions across managed endpoints.
- Check whether affected endpoints have relevant JavaScript debugging/development tooling present.
- Verify remediation status against Adobe APSB21-33 guidance.
- Review security telemetry for unusual process activity launched by After Effects.
- Confirm users handling external media files receive targeted handling guidance.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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-2021-28571 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
- 8.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H1.66Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.3HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/ee/security/products/after_effects/apsb21-33.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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.