Security readout for executives and security teams
Plain-English summary
A low-privileged user could save malicious script content in an Adobe Experience Manager form field. When another user visits the affected page, the script may run in that user’s browser, potentially exposing data or enabling unauthorized actions within the user’s session.
Executive priority
Treat this as a planned, near-term remediation rather than an emergency outage. Accelerate action for internet-facing authoring environments or workflows where low-privileged contributors can place content viewed by privileged staff. The principal concern is session-context data exposure or unauthorized browser actions.
Technical view
CVE-2026-27225 is stored cross-site scripting (CWE-79) in Adobe Experience Manager. Exploitation is network-accessible, low complexity, requires low privileges and victim interaction, and can cross a security boundary. The CVSS 3.1 score is 5.4, with limited confidentiality and integrity impact and no stated availability impact.
Likely exposure
AEM 6.5.23 and earlier are explicitly described as affected. The bundle also identifies AEM as a Cloud Service and AEM 6.5 LTS, but its serialized version ranges are ambiguous. Confirm each deployment against Adobe APSB26-24, especially Cloud Service 2026.2.0, LTS SP2, and 6.5.24 thresholds.
Exploitation context
An attacker needs low-privileged access to place malicious content into a vulnerable form field. A victim must then browse the page containing that stored content. The supplied sources do not report active exploitation, and the CVE is not listed as a CISA KEV in the bundle.
Researcher notes
The CVSS vector is AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. The source bundle clearly identifies stored XSS and AEM 6.5.23 and earlier, but the structured version entries do not fully express their range operators. Validate Cloud Service and LTS applicability directly against Adobe’s advisory before declaring exposure.
Mitigation direction
- Inventory all AEM deployments, editions, and exact versions.
- Review Adobe APSB26-24 for the applicable update or Cloud Service remediation status.
- Prioritize systems where low-privileged users can submit content viewed by administrators or editors.
- Apply the vendor-supported remediation and preserve existing access controls during rollout.
- Restrict untrusted form submission privileges where operationally feasible until remediation is verified.
Validation and detection
- Confirm each deployment’s product line and exact installed or managed-service version.
- Compare those versions with Adobe APSB26-24 and documented remediation thresholds.
- Identify forms accepting stored content from low-privileged users.
- Verify remediated fields safely encode or sanitize untrusted content without executing scripts.
- Review application and security logs for suspicious stored-content submissions or unexpected browser-side activity.
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-2026-27225 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.
SSVC decision data
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:L/UI:R/S:C/C:L/I:L/A:N2.32.7adobeVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/experience-manager/apsb26-24.htmlCVE reference, adobe · vendor-advisory
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.