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Adobe Experience Manager CVE-2025-64597

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
    Payload stored persistently
  4. Execution
    Victim browses affected page
  5. Persist
    Script executes in victim browser
  6. Impact
    Session hijack or data theft

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 the attacker to hold a low-privileged authenticated AEM account (PR:L) with access to write content into vulnerable form fields, and requires a victim to subsequently browse the page rendering that injected field (UI:R) - the payload does not fire without a human viewing the affected page. It affects Adobe Experience Manager 6.5.23 and earlier, including the 6.5 LTS line and AEM Cloud Service per the supplied CPEs. Key limiting factors: no unauthenticated path (an account is needed), mandatory victim interaction, and impact bounded to the victim's browser context (Low C/I, no availability or direct server compromise). The exact vulnerable form field/component is not identified in the available data.

Impact

This is a genuinely moderate-risk issue that should not be prioritized as a critical emergency. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, base 5.4) describes a network-reachable but authentication-dependent and user-interaction-dependent stored XSS with only Low confidentiality and integrity impact and no availability impact - the Scope:Changed flag reflects that injected script executes in the victim's browser trust context rather than the server's. All exploitation signals point the same direction (low urgency), with no conflict: EPSS is 0.25% (15th percentile), indicating a low modeled probability of exploitation in the near term; there is no CISA KEV listing (not actively exploited per available data); and no public exploit code was identified. No SSVC decision data was provided in the input, so an SSVC-based priority cannot be stated. The combination of required authentication (PR:L), required victim interaction (UI:R), and limited CIA impact means this is a defense-in-depth hardening item rather than a drop-everything vulnerability, despite AEM's broad enterprise footprint.

Exploit ScenarioDerived

A low-privileged authenticated AEM user (e.g. a content author or form editor) injects malicious JavaScript into a vulnerable form field, which is stored persistently. When a victim - such as another author or an administrator - later browses to the page rendering that field, the script executes in their browser session, enabling session/token theft or actions in their authenticated context. No public exploit code was identified at time of analysis, so exploitation would require an attacker to craft the payload independently.

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 14, 2026

Stored cross-site scripting in Adobe Experience Manager 6.5.23 and earlier - including the 6.5 LTS line and AEM as a Cloud Service per the affected CPE set - allows a low-privileged authenticated author to persist malicious JavaScript into vulnerable form fields, which then executes in the browser of any user who loads the page rendering that field. Exploitation requires both a valid low-privileged AEM account with content-write access (PR:L) and a victim who browses the poisoned page (UI:R), so the payload never fires on its own, and impact is confined to the victim's browser session with Low confidentiality and integrity effects (no availability impact, no direct server compromise). There is no evidence of confirmed active exploitation (not in CISA KEV) and no public exploit code identified at time of analysis; EPSS is 0.25% (15th percentile), consistent with a genuinely moderate-risk issue that should not be prioritized as a critical emergency.

RemediationAI

Upgrade Adobe Experience Manager past the affected 6.5.23 baseline by applying the fixed release published in Adobe security bulletin APSB25-115 (https://helpx.adobe.com/security/products/experience-manager/apsb25-115.html); because the input data does not specify an exact patched build number, confirm the target version in that advisory before planning the upgrade, and note that hosted AEM as a Cloud Service instances are remediated through Adobe-managed service updates rather than customer-side patching. Where immediate upgrade is not possible, specific compensating controls are: restrict and audit author/content-write accounts so that only trusted users can submit form-field content (this directly addresses the PR:L prerequisite and eliminates non-privileged injection paths, at the cost of tightening editorial workflows); disable or remove unneeded custom form components and any field types that permit raw HTML or rich-text input until the fields can be sanitized, accepting reduced authoring functionality; deploy a Content Security Policy on the publish tier that blocks inline and third-party script execution, which neutralizes most stored-XSS payloads but can break legitimate AEM client-side components and requires careful testing in report-only mode first; and keep the AEM Dispatcher/reverse proxy and WAF rules in front of author and publish instances with XSS pattern filtering, understanding that signature-based filtering is bypassable and is a defense-in-depth layer rather than a fix. Since exploitation requires a victim to open the poisoned page, phishing-resistant MFA on author accounts and prompt removal of any injected content further limit the attack's reach, but patching remains the only complete remediation.

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 flaw is CWE-79 (Improper Neutralization of Input During Web Page Generation), specifically the stored/persistent XSS variant, in Adobe Experience Manager's form-field handling. Unlike reflected XSS, the attacker's script is written into server-side content (a form field) and is served back to every user who views that page until the injected content is removed - which is why the CVSS vector assigns a Scope change (S:C) while keeping Confidentiality and Integrity at Low and Availability at None. The attack vector is network-based and low-complexity (AV:N/AC:L) but requires a low-privileged authenticated account (PR:L) and victim interaction (UI:R), meaning the classic SXSS delivery chain: a content author (or a compromised low-privilege account) with write access to the vulnerable form component persists a script, and the script executes for whatever authenticated or anonymous visitor loads the affected page. AEM's forms and content-authoring stack renders user-supplied field content into HTML, so the root cause is insufficient output encoding/sanitization of field values when the page is generated. The supplied CPEs confirm three affected tracks: the general Adobe Experience Manager product line (cpe:2.3:a:adobe:experience_manager), the AEM Cloud Service edition, and the 6.5 LTS release channel. The specific vulnerable form field or component is not identified in the available data, and no CWE beyond CWE-79 or additional attack prerequisite is asserted by the independent assessment.

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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

Network-reachable stored XSS requiring a low-privileged account (PR:L) and victim browsing (UI:R); script runs in victim browser context (S:C) with limited C/I and no availability impact.

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:L/VI:L/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 across large organizations and cloud service
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
High

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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