Security readout for executives and security teams
Plain-English summary
This CVE is a cross-site scripting issue in Adobe Experience Manager. An attacker could place malicious script in vulnerable form fields, and that script may run in another user’s browser when they view the affected page. Business risk is mainly user-session abuse, data exposure, and workflow manipulation in AEM environments.
Executive priority
Handle as a normal-priority remediation item unless AEM supports sensitive workflows or many untrusted users. It is not marked as actively exploited in the supplied sources, but exposed AEM instances should be reviewed and patched promptly.
Technical view
CVE-2021-28625 affects Adobe Experience Manager Cloud Service and AEM 6.5.8.0 and below. The issue is CWE-79 XSS in inbox workitem.jsp. CVSS 3.1 is 6.3 with network attack vector, low complexity, no privileges required, and user interaction required.
Likely exposure
Organizations using Adobe Experience Manager Cloud Service or on-premises AEM 6.5.8.0 and below should treat exposure as plausible. Risk depends on whether affected inbox/work item functionality is reachable by users and whether vulnerable fields can contain attacker-controlled content.
Exploitation context
The provided sources do not show known active exploitation, and the CVE is not marked KEV. Exploitation requires a victim to browse to a page containing the vulnerable field, so phishing, shared workflow content, or compromised content paths may matter.
Researcher notes
Evidence is limited to the CVE record and Adobe advisory reference. The sources identify the vulnerable component and impact class but do not provide exploit details. Avoid assuming broader AEM modules, confirmed exploitation, or specific fixed versions without consulting APSB21-39.
Mitigation direction
- Review Adobe APSB21-39 as the authoritative remediation source.
- Patch or update affected AEM deployments according to Adobe guidance.
- Confirm Adobe-managed Cloud Service tenants are covered by vendor remediation.
- Prioritize environments exposing AEM workflows to broad or external users.
- Monitor for suspicious script-like content in workflow fields.
Validation and detection
- Inventory all Adobe Experience Manager Cloud Service and on-prem deployments.
- Confirm whether any on-prem deployment is 6.5.8.0 or below.
- Identify use of AEM inbox or work item pages.
- Review Adobe advisory applicability against each environment.
- Check security monitoring for unexpected browser script execution reports.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2021-28625 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
- 6.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
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:L/A:L2.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/experience-manager/apsb21-39.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 Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.