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Adobe Experience Manager CVE-2025-64575

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2025-12-10 psirt@adobe.com
5.4
CVSS 3.1 · Vendor: adobe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as low-privileged AEM user
  2. Delivery
    Inject script into vulnerable form field
  3. Exploit
    Malicious payload stored server-side
  4. Execution
    Victim browses affected page
  5. Impact
    Script executes in victim browser session

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires an authenticated low-privileged account (PR:L) with the ability to write into AEM form fields, plus a victim who subsequently browses to the page containing the injected field (UI:R) - the attacker cannot trigger execution alone. Limiting factors: the attacker must already hold valid AEM credentials with content/form-authoring rights, and a separate victim must view the malicious content for the stored payload to fire, so this is not remote-unauthenticated and not self-contained. Affected scope is Adobe Experience Manager 6.5.23 and earlier (including the 6.5 LTS and AEM Cloud Service CPE entries listed).

Impact

This is a genuine but moderate-priority issue, not a high-urgency emergency. The CVSS 3.1 score of 5.4 (Medium) is consistent across all available signals. The vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N shows network-reachable but authenticated (PR:L) exploitation that additionally requires victim interaction (UI:R), with only Low confidentiality and integrity impact and no availability impact - a classic stored XSS profile. EPSS reinforces low real-world urgency at 0.25% (15th percentile), and there is no CISA KEV listing and no public exploit identified, so there is no evidence of active or automated exploitation. No SSVC decision data was provided in the input. The signals are mutually consistent (medium CVSS + low EPSS + no KEV/POC), so there is no conflict to flag; the main caveat is that the dual requirement of attacker authentication AND victim interaction materially lowers practical risk below what a raw 'network vector' reading might suggest.

Exploit ScenarioDerived

A low-privileged authenticated user (e.g., an author or content contributor) injects malicious JavaScript into a vulnerable AEM form field, which is stored server-side. When a victim - such as another author or administrator - later browses to the page rendering that field, the script executes in their browser, potentially stealing session tokens or performing actions in their authenticated context. No public exploit code is known to exist at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 08, 2026

Stored cross-site scripting in Adobe Experience Manager 6.5.23 and earlier allows an authenticated, low-privileged attacker to inject malicious JavaScript into vulnerable form fields, which then executes in a victim's browser when they view the affected page. The attacker must have valid AEM credentials with content-authoring rights, and a separate victim must browse to the compromised content, so this is not remotely exploitable without authentication. With a CVSS score of 5.4 and an EPSS score of 0.25% (15th percentile), the immediate risk is moderate; no public exploit code or active exploitation has been identified at the time of analysis.

RemediationAI

Apply the latest security updates as provided in Adobe's advisory APSB25-115 (https://helpx.adobe.com/security/products/experience-manager/apsb25-115.html). Adobe has released patches for supported versions; administrators should upgrade to the most recent fixed version. If immediate patching is not possible, mitigate risk by restricting form-authoring permissions to trusted users only (which may impact content workflows), enforcing strict input validation and output encoding on all form fields, and deploying a Content Security Policy (CSP) that disallows inline scripts-though this may break some legitimate AEM functionality. Additionally, monitor for suspicious content modifications and consider web application firewall (WAF) rules to filter XSS patterns, understanding that WAFs may produce false positives and cannot fully eliminate the vulnerability.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability is a stored cross-site scripting (XSS) issue classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). In Adobe Experience Manager (AEM), form fields are part of the content-authoring and publishing workflow. An attacker with low privileges-typically an author or contributor role-can inject malicious script into a form field. Because the script is stored in the AEM repository (e.g., JCR), it is served to other users when they access the page containing that field, leading to script execution in the victim's browser. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N confirms the attack is network-based, requires low privileges, and relies on victim interaction (UI:R). The CPE entries indicate the affected scope includes the base Adobe Experience Manager product, the AEM Cloud Service, and the 6.5 Long-Term Support (LTS) release. The root cause is insufficient input sanitization or output encoding when rendering user-supplied form data, allowing script injection that persists in the application.

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Severity by source

Vendor (adobe) PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
vuln.today AI 5.4 MEDIUM

Stored XSS reachable over the network but requiring an authenticated low-priv author (PR:L) and a victim's page visit (UI:R); payload executes in the victim's browser context, giving scope change (S:C) with Low C/I and no A.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (adobe).

CVSS VectorVendor: adobe

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionCVE.org

Adobe Experience Manager versions 6.5.23 and earlier are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.

Threat Intelligence Overview

EPSS Score
0.2%
Top 85% exploitable
Prevalence
High
widely-deployed enterprise CMS/DAM platform across large organizations
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)CVE.org

cpe:2.3:a:adobe:experience_manager:*:*:*:*:-:*:*:*
cpe:2.3:a:adobe:experience_manager:*:*:*:*:aem_cloud_service:*:*:*
cpe:2.3:a:adobe:experience_manager:6.5:-:*:*:lts:*:*:*
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