{"id":"CVE-2025-42999","kind":"vulnerability","aliases":["CVE-2025-42999"],"related":[],"title":"SAP NetWeaver Visual Composer Metadata Uploader is vulnerable when a privileged user can upload untrusted or…","description":"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.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"SAP NetWeaver's Visual Composer Metadata Uploader deserializes untrusted content without safe checks. A privileged attacker can use this to compromise confidentiality, integrity and availability of the host running it.","severity":"critical","cvss":9.1,"epss":null,"exploited":true,"exploited_at":"2025-05-15T00:00:00+00:00","products":[{"name":"SAP NetWeaver","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"sap netweaver","fixed":[],"affected":"= 7.5","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","java","netweaver","ransomware","runtime","sap"],"not_affected_if":["no-visual-composer","patched"],"how_to_check":"Check whether the SAP NetWeaver system runs the Visual Composer Metadata Uploader component and confirm the patch level against the SAP Security Note linked in the CISA entry. unknown","fix":"Apply the SAP vendor mitigation or patch per SAP instructions; if no mitigation exists, discontinue use of the product as CISA directs. unknown","status":"open","published_at":"2025-05-13T01:15:48+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:48:34+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-23T20:48:34Z","model":"claude-haiku-5-5","output":{"fix":"Apply the SAP vendor mitigation or patch per SAP instructions; if no mitigation exists, discontinue use of the product as CISA directs. unknown","reach":"network","summary":"SAP NetWeaver's Visual Composer Metadata Uploader deserializes untrusted content without safe checks. A privileged attacker can use this to compromise confidentiality, integrity and availability of the host running it.","category":"runtime","who_cares":["sap","netweaver","java"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker runs malicious code on the SAP server and reads or alters its data","analyst_note":"Find the SAP Security Note ID and the affected/fixed NetWeaver versions on the SAP support portal; the sources give no version data.","how_to_check":"Check whether the SAP NetWeaver system runs the Visual Composer Metadata Uploader component and confirm the patch level against the SAP Security Note linked in the CISA entry. unknown","needs_analyst":true,"not_affected_if":["no-visual-composer","patched"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00046,"input_tokens":2564,"output_tokens":407,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':105C '-2025':17A,20A '-42999':18A,21A '22':104C 'action':95C 'allow':72C 'appli':96C 'applic':102C 'attack':47B,75C 'avail':56B,82C 'bod':103C 'check':44B 'cisa':93C 'cloud':108C 'compos':4A,36B,64C 'compromis':52B,77C 'confidenti':53B,79C 'contain':67C 'content':41B,92C 'cve':16A,19A 'deseri':39B,69C,88C 'discontinu':111C 'exploit':26B 'follow':101C 'guidanc':106C 'host':59B,85C 'instruct':100C 'integr':54B,80C 'java':27B 'malici':91C 'metadata':5A,37B,65C 'mitig':97C,117C 'netweav':2A,28B,33B,62C 'netweaver':23A,25A 'per':98C 'privileg':11A,46B,74C 'product':115C 'ransomwar':29B 'requir':94C 'run':60B 'runtim':30B 'safe':43B 'sap':1A,22A,24A,31B,32B,61C 'servic':109C 'system':86C 'unavail':119C 'untrust':15A,40B,89C 'upload':6A,14A,38B,66C 'use':49B,112C 'user':12A 'vendor':99C 'visual':3A,35B,63C 'vulner':8A,70C 'without':42B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2025-05-13T01:15:48+00:00","kev":{"dateAdded":"2025-05-15","dueDate":"2025-06-05","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.","knownRansomwareCampaignUse":"Known"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cvss_by":"cna@sap.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2025-42999","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-42999","severity":null,"published_at":"2025-05-15T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T12:39:22+00:00","note":null},{"source":"nvd","external_id":"CVE-2025-42999","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-42999","severity":null,"published_at":"2025-05-13T01:15:48+00:00","modified_at":"2026-08-11T04:17:17+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}