Adobe Experience Manager
CVE-2025-64858
MEDIUM
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as low-priv AEM user
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DeliveryInject script into vulnerable form field
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ExploitPayload stored in AEM
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ExecutionVictim browses affected page
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ImpactMalicious JS executes in victim browser
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 | Requires a valid low-privileged authenticated AEM account with access to submit content into the vulnerable form fields (PR:L), plus victim interaction (UI:R) - a separate user must browse to the page rendering the injected field for the stored script to execute. Affects Adobe Experience Manager 6.5.23 and earlier, including AEM Cloud Service and the 6.5 LTS build. Exploitation is limited by the need for both attacker authentication and victim navigation; there is no unauthenticated or fully automated path. |
| Impact | This is a genuine but low-priority issue. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, 5.4 MEDIUM) is internally consistent with the description: a low-privileged authenticated attacker (PR:L) injects script into form fields that later executes in another user's browser (UI:R, S:C for the browser-context crossing, C:L/I:L for limited stored-XSS impact). Exploitation is double-gated by both a valid low-priv AEM account AND victim interaction (browsing to the affected page). Threat-intel signals reinforce low real-world urgency: EPSS is only 0.20% (9th percentile), there is no CISA KEV listing, and no public POC has been identified. All signals align - there is no conflict between the CVSS vector, EPSS, and KEV status. This is a real-but-modest defense-in-depth fix rather than an emergency, though AEM's enterprise footprint warrants routine patching per Adobe APSB25-115. |
| Exploit ScenarioDerived | A low-privileged AEM author account holder injects a malicious JavaScript payload into a vulnerable form field. The stored script is persisted and later executes in the browser of a higher-privileged user or other victim who navigates to the page containing that field, enabling limited session/data theft in the victim's browser context. No public exploit code has been identified at time of analysis. |
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Alert meAnalysisAIv1 – Sep 26, 2026
Stored cross-site scripting in Adobe Experience Manager 6.5.23 and earlier (including AEM as a Cloud Service and the 6.5 LTS line) lets a low-privileged authenticated author inject malicious JavaScript into vulnerable form fields, which then executes in the browser of any user who later browses the page rendering that field. Exploitation requires a valid low-privileged AEM account plus victim interaction (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, base 5.4), so there is no unauthenticated or fully automated attack path; assessed impact is limited confidentiality and integrity loss within the victim's session. EPSS is low at 0.20% (9th percentile), the issue is not listed in CISA KEV, and no public exploit code has been identified at time of analysis.
RemediationAI
Upgrade Adobe Experience Manager to the patched release identified in Adobe's advisory APSB25-115 (https://helpx.adobe.com/security/products/experience-manager/apsb25-115.html), which is the authoritative source for the exact fixed AEM 6.5.x/LTS and Cloud Service versions; the specific patched version number was not present in the provided data, so confirm it directly against that bulletin before scheduling the change. Where immediate upgrade is not possible, compensating controls are: restrict content-authoring and form-submission privileges so that only trusted, vetted accounts (rather than any low-privileged author) can write to AEM form fields - this reduces the attacker population but does not remove the injection sink; deploy a strict Content-Security-Policy on AEM author and publish tiers to block inline script execution, accepting that poorly configured or legacy components may break; sanitize and re-validate stored form-field content (server-side output encoding on render) as an interim hardening measure, with the caveat that custom AEM components may bypass default protections and require separate review; and monitor author/publish logs for anomalous form submissions containing script-like payloads, which provides detection but not prevention. Note that because the issue is stored XSS, cleaning up already-injected content after patching is necessary to fully close the exposure.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation), specifically the stored/persistent variant: user-supplied content is written into an AEM form field and persisted server-side, then rendered back into a page without adequate output encoding or sanitization. Because the payload is stored rather than reflected, a single successful injection can affect every user who views the affected page, which is why the CVSS vector scores scope as Changed (S:C) - the script executes in the context of the victim's browser session and origin rather than the attacker's. The vector PR:L confirms the attacker must hold an authenticated, low-privileged AEM account capable of submitting content into the vulnerable form fields, while UI:R confirms a separate victim must navigate to the poisoned page for the script to fire. CPE data maps the affected surface to Adobe Experience Manager generally (cpe:2.3:a:adobe:experience_manager:*:*:*:*:-), the AEM Cloud Service edition (aem_cloud_service), and the 6.5 LTS build channel, indicating the vulnerable form-field handling is shared across the 6.5.x on-premise/LTS and cloud deployment models rather than being specific to a single edition.
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Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Network-reachable web CMS with low-priv author account (PR:L) storing script that runs in a victim's browser (UI:R, S:C), with limited confidentiality/integrity and no availability impact.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
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
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.
What every action level means
SSVC AssessmentENISA
Priority Score
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
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NVD
CVE.org
EPSS
VulDB
GitHub PoC
Exploit-DB