{"id":75136,"date":"2025-09-15T07:17:23","date_gmt":"2025-09-15T07:17:23","guid":{"rendered":""},"modified":"2025-10-14T18:32:18","modified_gmt":"2025-10-15T00:32:18","slug":"cve-2025-42944-critical-deserialization-vulnerability-in-sap-netweaver","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-42944-critical-deserialization-vulnerability-in-sap-netweaver\/","title":{"rendered":"CVE-2025-42944: Critical Deserialization Vulnerability in SAP NetWeaver<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The Common Vulnerabilities and Exposures (CVE) system has identified a critical vulnerability labeled as CVE-2025-42944. This risk lies within SAP NetWeaver, a popular technology platform that provides the technical foundation for many SAP applications. The vulnerability stems from a deserialization flaw that could be exploited through the RMI-P4 module, leaving systems open to potentially<\/a> devastating cyberattacks.
\nThe significance of this vulnerability<\/a> cannot be overstated. Given the widespread use of SAP NetWeaver, this vulnerability has the potential<\/a> to affect a vast number of businesses and organizations globally. Furthermore, successful exploitation could lead to arbitrary OS command execution<\/a>, putting the confidentiality, integrity, and availability of systems and data at significant risk.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-42944
\nSeverity: Critical (CVSS: 10.0)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

SAP NetWeaver | All versions prior<\/a> to patch<\/p>\n

How the Exploit Works<\/strong><\/p>\n

A vulnerability resides in the deserialization<\/a> process of SAP NetWeaver. An attacker can exploit this by sending a malicious payload to an open port in the RMI-P4 module. Deserialization of this untrusted Java object could then trigger the execution of arbitrary operating system<\/a> commands. In essence, this vulnerability could give an unauthorized user control over the system<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here is a conceptual example that demonstrates how this vulnerability might be exploited. Note that this is a simplification for illustrative purposes and actual exploitation may require additional steps:<\/p>\n

import java.rmi.registry.LocateRegistry;\nimport java.rmi.registry.Registry;\nimport ysoserial.payloads.CommonsCollections6;\npublic class Exploit {\npublic static void main(String[] args) {\ntry {\nRegistry registry = LocateRegistry.getRegistry(\"target.example.com\", 1099);\nCommonsCollections6 payload = new CommonsCollections6();\nregistry.bind(\"malicious_payload\", payload.getObject(\"os_command_to_execute\"));\n} catch (Exception e) {\ne.printStackTrace();\n}\n}\n}<\/code><\/pre>\n
In this example, the attacker uses the ysoserial library to generate a malicious Java object, which contains an operating system<\/a> command. This object is then sent to the target system via<\/a> the RMI-P4 port (1099 in this case). If the target system deserializes this object, the embedded command is executed<\/a>.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate the risk from CVE-2025-42944, users should apply the patch provided by SAP immediately. Until the patch can be applied, users can employ a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure to detect and block exploit attempts. It is also recommended to disable the RMI-P4 service if it is not in use.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The Common Vulnerabilities and Exposures (CVE) system has identified a critical vulnerability labeled as CVE-2025-42944. This risk lies within SAP NetWeaver, a popular technology platform that provides the technical foundation for many SAP applications. The vulnerability stems from a deserialization flaw that could be exploited through the RMI-P4 module, leaving systems open to potentially […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-75136","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t