CVE-2025-49533
published 2025-07-08CVE-2025-49533: Adobe Experience Manager (MS) versions 6.5.23.0 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could lead to arbitrary code…
PriorityP187critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
ITWEXPLOITVulnCheck KEV
Exploited in the wild
EPSS
44.89%
98.6th percentile
Adobe Experience Manager (MS) versions 6.5.23.0 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could lead to arbitrary code execution by an attacker. Exploitation of this issue does not require user interaction. Scope is unchanged.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| adobe | adobe_experience_manager | <= 6.5.23.0 | — |
| adobe | experience_manager | <= 6.5.23.0 | — |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
bytes↗
H4sIAA (gzip+base64 serialized Java deserialization payload in serDoc parameter)
snort
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Adobe Experience Manager Forms Insecure Deserialization (CVE-2025-49533)"; flow:established,to_server; http.uri; content:"/FormServer/servlet/GetDocumentServlet|3f|"; fast_pattern; startswith; content:"serDoc|3d|"; content:"H4sIAA"; reference:url,slcyber.io/assetnote-security-research-center/struts-devmode-in-2025-critical-pre-auth-vulnerabilities-in-adobe-experience-manager-forms/; reference:cve,2025-49533; classtype:web-application-attack; sid:2064045; rev:1; metadata:affected_product Adobe_Experience_Manager, attack_target Server, tls_state TLSDecrypt, created_at 2025_08_19, cve CVE_2025_49533, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_08_19, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
- →CVE-2025-49533 is a Java deserialization flaw in the FormServer module. The vulnerable endpoint is /FormServer/servlet/GetDocumentServlet, which accepts a 'serDoc' parameter containing a gzip+base64-encoded serialized Java payload without validation. Detect requests to this URI containing the 'serDoc=' parameter with a gzip magic bytes prefix (H4sI) in the value. ↗
- →Exploitation does not require authentication. Look for unauthenticated HTTP GET requests to /FormServer/servlet/GetDocumentServlet with a serDoc parameter containing base64/gzip-encoded data (starting with H4sI). ↗
- →A successful exploitation attempt will return an HTTP 200 response containing the string 'InvocationTargetException' in the body, which can be used as a blind RCE detection signal. ↗
- →Pre-exploitation fingerprinting step: attackers may first probe /lc/libs/livecycle/core/content/login.html and check for 'Adobe Experience Manager forms' in the response body to confirm a vulnerable AEM Forms instance before sending the deserialization payload. ↗
- →The ysoserial gadget chain used in the known PoC is CommonsBeanutils1, with the payload gzip-compressed and base64-encoded. Network signatures should match the H4sI gzip magic bytes in the serDoc URL parameter. ↗
- →The Snort/Suricata rule (ET sid:2064045) targets TLS-decrypted traffic; ensure TLS inspection is enabled on perimeter and internal sensors to detect this attack in encrypted environments. ↗
- ·The PoC and Snort rule reference the public technical write-up at slcyber.io. Defenders should consult this resource for full exploit chain details, as the write-up triggered Adobe's emergency patch release. ↗
- ·If patching is not immediately possible, restrict internet access to AEM Forms when deployed as a standalone application, as recommended by the researchers. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vulncheck9.8CRITICAL
vendor_msrc5.5MEDIUM
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GHSA
GHSA-rww2-6r5x-v47g: Adobe Experience Manager (MS) versions 6
ghsa_unreviewed·2025-07-09
CVE-2025-49533 [CRITICAL] CWE-502 GHSA-rww2-6r5x-v47g: Adobe Experience Manager (MS) versions 6
Adobe Experience Manager (MS) versions 6.5.23.0 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could lead to arbitrary code execution by an attacker. Exploitation of this issue does not require user interaction. Scope is unchanged.
VulnCheck
Adobe experience_manager Deserialization of Untrusted Data
vulncheck·2025·CVSS 9.8
CVE-2025-49533 [CRITICAL] Adobe experience_manager Deserialization of Untrusted Data
Adobe experience_manager Deserialization of Untrusted Data
Adobe Experience Manager (MS) versions 6.5.23.0 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could lead to arbitrary code execution by an attacker. Exploitation of this issue does not require user interaction. Scope is unchanged.
Affected: Adobe experience_manager
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2025-07-30&host_type=src&vulnerability=cve-2025-49533; https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2025-08-11&host_type=src&vulnerability=cve
Microsoft
ath11k: Change max no of active probe SSID and BSSID to fw capability
vendor_msrc·2025-02-11·CVSS 5.5
CVE-2022-49533 [MEDIUM] ath11k: Change max no of active probe SSID and BSSID to fw capability
ath11k: Change max no of active probe SSID and BSSID to fw capability
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Suricata
ET WEB_SPECIFIC_APPS Adobe Experience Manager Forms Insecure Deserialization (CVE-2025-49533)
suricata·2025-08-19·CVSS 9.8
CVE-2025-49533 [CRITICAL] ET WEB_SPECIFIC_APPS Adobe Experience Manager Forms Insecure Deserialization (CVE-2025-49533)
ET WEB_SPECIFIC_APPS Adobe Experience Manager Forms Insecure Deserialization (CVE-2025-49533)
Rule: alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Adobe Experience Manager Forms Insecure Deserialization (CVE-2025-49533)"; flow:established,to_server; http.uri; content:"/FormServer/servlet/GetDocumentServlet|3f|"; fast_pattern; startswith; content:"serDoc|3d|"; content:"H4sIAA"; reference:url,slcyber.io/assetnote-security-research-center/struts-devmode-in-2025-critical-pre-auth-vulnerabilities-in-adobe-experience-manager-forms/; reference:cve,2025-49533; classtype:web-application-attack; sid:2064045; rev:1; metadata:affected_product Adobe_Experience_Manager, attack_target Server, tls_state TLSDecrypt, created_at 2025_08_19, cve CVE_2025_49533, deployment Perimeter, deploymen
Nuclei
Adobe Experience Manager Forms - Insecure Deserialization
nuclei·CVSS 9.8
CVE-2025-49533 [CRITICAL] Adobe Experience Manager Forms - Insecure Deserialization
Adobe Experience Manager Forms - Insecure Deserialization
Adobe Experience Manager versions 6.5.23 and earlier are affected by a Misconfiguration vulnerability that could result in arbitrary code execution. An attacker could leverage this vulnerability to bypass security mechanisms and execute code. Exploitation of this issue does not require user interaction and scope is changed.
Template:
id: CVE-2025-49533
info:
name: Adobe Experience Manager Forms - Insecure Deserialization
author: ritikchaddha,DhiyaneshDK,s4e-io
severity: critical
description: |
Adobe Experience Manager versions 6.5.23 and earlier are affected by a Misconfiguration vulnerability that could result in arbitrary code execution. An attacker could leverage this vulnerability to bypass security mechanisms and execute co
Bleepingcomputer
CISA: Maximum-severity Adobe flaw now exploited in attacks
blogs_bleepingcomputer·2025-10-16·CVSS 9.8
CVE-2025-54253 [CRITICAL] CISA: Maximum-severity Adobe flaw now exploited in attacks
## CISA: Maximum-severity Adobe flaw now exploited in attacks
## Sergiu Gatlan
CISA has warned that attackers are actively exploiting a maximum-severity vulnerability in Adobe Experience Manager to execute code on unpatched systems.
Tracked as CVE-2025-54253 , this critical security flaw stems from a misconfiguration weakness that affects Adobe Experience Manager (AEM) Forms on JEE versions 6.5.23 and earlier.
Successful exploitation can allow unauthenticated threat actors to bypass security mechanisms and execute arbitrary code remotely in low-complexity attacks that don't require user interaction.
The flaw was discovered by Adam Kues and Shubham Shah of Searchlight Cyber, who disclosed it to Adobe on April 28th, together with two other issues (CVE-2025-54254 and CVE-2025-49533).
Ho
Bleepingcomputer
Adobe issues emergency fixes for AEM Forms zero-days after PoCs released
blogs_bleepingcomputer·2025-08-05·CVSS 9.8
CVE-2025-54253 [CRITICAL] Adobe issues emergency fixes for AEM Forms zero-days after PoCs released
## Adobe issues emergency fixes for AEM Forms zero-days after PoCs released
## Lawrence Abrams
Adobe released emergency updates for two zero-day flaws in Adobe Experience Manager (AEM) Forms on JEE after a PoC exploit chain was disclosed that can be used for unauthenticated, remote code execution on vulnerable instances.
The flaws are tracked as CVE-2025-54253 and CVE-2025-54254:
CVE-2025-54253: Misconfiguration allowing arbitrary code execution. Rated "Critical" with a maximum-severity 10.0 CVSS score.
CVE-2025-54254: Improper Restriction of XML External Entity Reference (XXE) allowing arbitrary file system read. Rated "Critical" with a CVSS score of 8.6.
Adobe has fixed the flaws in the latest versions as described in this advisory .
The vulnerabilities were discovered by Shubham
Greynoiseio
NoiseLetter August 2025
blogs_greynoiseio
NoiseLetter August 2025
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2025-07-08
Published
Exploited in the wild