Security readout for executives and security teams
Plain-English summary
CVE-2021-28574 is a medium-severity Adobe Animate flaw. A user would need to open a malicious file, after which the flaw could expose sensitive information available to that user's session. This is not shown as actively exploited in the provided sources.
Executive priority
Treat this as a routine but necessary workstation remediation item. It has limited confidentiality impact and requires user interaction, but exposed creative workstations can still leak sensitive user-context data if outdated software remains in use.
Technical view
Adobe Animate 21.0.5 and earlier have a CWE-125 out-of-bounds read when parsing a specially crafted file. The CVSS 3.1 score is 4.3, with network attack vector, no privileges required, required user interaction, and low confidentiality impact only.
Likely exposure
Exposure is most likely on workstations running Adobe Animate 21.0.5 or earlier, especially creative or training teams that receive external Animate-related files. The source bundle does not provide CPEs or complete version granularity.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires social engineering or another delivery path that causes a victim to open a malicious file in Adobe Animate.
Researcher notes
Evidence supports Adobe Animate 21.0.5 and earlier, CWE-125, and information disclosure through crafted file parsing. The bundle does not name exploit activity, detailed affected CPEs, or exact fixed versions, so remediation should follow Adobe APSB21-35.
Mitigation direction
- Check Adobe APSB21-35 for the vendor-supported update path.
- Upgrade or remove Adobe Animate 21.0.5 and earlier installations.
- Limit opening Animate files from untrusted external sources.
- Prioritize endpoints used by creative teams handling external files.
Validation and detection
- Inventory endpoints for Adobe Animate installations and versions.
- Confirm installed versions are not 21.0.5 or earlier.
- Review vulnerability scanner results for CVE-2021-28574 findings.
- Verify user-facing file handling controls for untrusted Animate files.
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-125: 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-2021-28574 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
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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:L/PR:N/UI:R/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/animate/apsb21-35.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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.