# CVE-2025-42999 — SAP_SE SAP NetWeaver (Visual Composer development server) **CISA KEV** · **Ransomware** > As of 2026-08-11, CVE-2025-42999 is a CRITICAL-severity vulnerability in SAP_SE SAP NetWeaver (Visual Composer development server), CVSS v3.1 9.1, EPSS 12.7% (96.1th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-05-15), with a US federal remediation deadline of 2025-06-05, and CISA links it to known ransomware campaigns. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2025-42999, most recently “SAP Patches Critical NetWeaver, Approuter, and Commerce Cloud Flaws (CVE-2026-44747, CVE-2026-27690, CVE-2026-44761)”. **Last updated:** 2026-08-11 ## What is CVE-2025-42999? SAP NetWeaver Visual Composer Metadata Uploader is vulnerable when a privileged user can upload untrusted or malicious content which, when deserialized, could potentially lead to a compromise of confidentiality, integrity, and availability of the host system. The record classifies CVE-2025-42999 under weakness class [CWE-502](https://intel.threadlinqs.com/cwe/CWE-502). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 530 days ago. ## Severity and exploitation probability - **CVSS v3.1 base score:** 9.1 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`) - **EPSS (FIRST):** 12.7% probability of exploitation in the next 30 days, higher than 96.1% of all scored CVEs - **CISA KEV:** Listed since 2025-05-15, federal remediation deadline 2025-06-05 — used in known ransomware campaigns - **Threadlinqs priority:** 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum - **Published:** 2025-05-13, last modified 2026-08-11 ## Is CVE-2025-42999 being exploited? CISA added CVE-2025-42999 to the Known Exploited Vulnerabilities catalog on 2025-05-15, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2025-06-05 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2025-42999 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 47 in the Threadlinqs vulnerability feed. - [trickest/cve](https://github.com/trickest/cve/blob/main/2025/CVE-2025-42999.md) (trickest) ## Affected products and versions - [SAP_SE](https://intel.threadlinqs.com/vendors/sap-se): SAP NetWeaver (Visual Composer development server) ## How to fix CVE-2025-42999 Because CVE-2025-42999 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2025-06-05. No vendor patch reference has been recorded for CVE-2025-42999 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise. ## Threat activity tracking CVE-2025-42999 1 tracked threat in the Threadlinqs corpus references CVE-2025-42999, either in the campaign’s CVE list or as an indicator on the campaign record. - [SAP Patches Critical NetWeaver, Approuter, and Commerce Cloud Flaws (CVE-2026-44747, CVE-2026-27690, CVE-2026-44761)](https://intel.threadlinqs.com/threat/TL-2026-1302) — CRITICAL · 2026-07-14 ## Sources Enriched from CVE.org, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-10. **Other references** - [me.sap.com](https://me.sap.com/notes/3604119) - [url.sap](https://url.sap/sapsecuritypatchday) Canonical: https://intel.threadlinqs.com/cve/CVE-2025-42999 Full detection coverage and IOCs for threats exploiting CVE-2025-42999 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp