{"cveID":"CVE-2025-42999","vendorProject":"SAP","product":"NetWeaver","vulnerabilityName":"SAP NetWeaver Deserialization Vulnerability","dateAdded":"2025-05-15","shortDescription":"SAP NetWeaver Visual Composer Metadata Uploader contains a deserialization vulnerability that allows a privileged attacker to compromise the confidentiality, integrity, and availability of the host system by deserializing untrusted or malicious content.","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","dueDate":"2025-06-05","knownRansomwareCampaignUse":"Known","notes":"SAP users must have an account to log in and access the patch: https://me.sap.com/notes/3604119 ; https://nvd.nist.gov/vuln/detail/CVE-2025-42999","cwes":["CWE-502"],"year":2025,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2025-42999","technique":"T1190","technique_name_at_mapping":"Exploit Public-Facing Application","mapping_type":"exploitation_technique","capability_group":"untrusted_data","comments":"This deserialization vulnerability in NetWeaver Visual Composer, when chained with CVE-2025-31324, allows an attacker to execute unauthenticated remote code with administrator privileges, leading to consequences such as web shell deployment.","references":["https://onapsis.com/blog/new-exploit-for-cve-2025-31324/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2025-42999","technique":"T1203","technique_name_at_mapping":"Exploitation for Client Execution","mapping_type":"exploitation_technique","capability_group":"untrusted_data","comments":"This deserialization vulnerability in NetWeaver Visual Composer, when chained with CVE-2025-31324, allows an attacker to execute unauthenticated remote code with administrator privileges, leading to consequences such as web shell deployment.","references":["https://onapsis.com/blog/new-exploit-for-cve-2025-31324/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2025-42999","technique":"T1059","technique_name_at_mapping":"Command and Scripting Interpreter","mapping_type":"primary_impact","capability_group":"untrusted_data","comments":"This deserialization vulnerability in NetWeaver Visual Composer, when chained with CVE-2025-31324, allows an attacker to execute unauthenticated remote code with administrator privileges, leading to consequences such as web shell deployment.","references":["https://onapsis.com/blog/new-exploit-for-cve-2025-31324/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2025-42999","technique":"T1505.003","technique_name_at_mapping":"Web Shell","mapping_type":"secondary_impact","capability_group":"untrusted_data","comments":"This deserialization vulnerability in NetWeaver Visual Composer, when chained with CVE-2025-31324, allows an attacker to execute unauthenticated remote code with administrator privileges, leading to consequences such as web shell deployment.","references":["https://onapsis.com/blog/new-exploit-for-cve-2025-31324/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1059","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Command and Scripting Interpreter","name_at_mapping":"Command and Scripting Interpreter","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":95,"has_detection_strategy":true},{"id":"T1190","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exploit Public-Facing Application","name_at_mapping":"Exploit Public-Facing Application","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":149,"has_detection_strategy":true},{"id":"T1203","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exploitation for Client Execution","name_at_mapping":"Exploitation for Client Execution","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":35,"has_detection_strategy":true},{"id":"T1505.003","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Web Shell","name_at_mapping":"Web Shell","renamed":false,"revoked_by":null,"mapping_types":["secondary_impact"],"sigma_rule_count":35,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact","secondary_impact"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"full","sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-24 19:45 UTC","_attack_version":"19.2"}