# CVE-2025-40948 — Siemens RUGGEDCOM ROX MX5000 > As of 2026-05-12, CVE-2025-40948 is a MEDIUM-severity vulnerability in Siemens RUGGEDCOM ROX MX5000, CVSS v3.1 6.8, EPSS 0.2% (20.5th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2025-40948, most recently “Siemens Ruggedcom ROX II Three-Stage Zero-Day Exploit Chain (CVE-2025-40948, CVE-2025-40947, CVE-2025-40949)”. **Last updated:** 2026-05-12 ## What is CVE-2025-40948? A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.17.1), RUGGEDCOM ROX MX5000RE (All versions < V2.17.1), RUGGEDCOM ROX RX1400 (All versions < V2.17.1), RUGGEDCOM ROX RX1500 (All versions < V2.17.1), RUGGEDCOM ROX RX1501 (All versions < V2.17.1), RUGGEDCOM ROX RX1510 (All versions < V2.17.1), RUGGEDCOM ROX RX1511 (All versions < V2.17.1), RUGGEDCOM ROX RX1512 (All versions < V2.17.1), RUGGEDCOM ROX RX1524 (All versions < V2.17.1), RUGGEDCOM ROX RX1536 (All versions < V2.17.1), RUGGEDCOM ROX RX5000 (All versions < V2.17.1). Affected devices do not properly validate input in the web server's JSON-RPC interface. This could allow an authenticated remote attacker to read arbitrary files from the underlying operating system's filesystem with root privileges. The record classifies CVE-2025-40948 under weakness class [CWE-88](https://intel.threadlinqs.com/cwe/CWE-88). 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. 11 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 146 days ago. ## Severity and exploitation probability - **CVSS v3.1 base score:** 6.8 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N`) - **CVSS v4.0 base score:** 6.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N`) - **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 20.5% of all scored CVEs - **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog - **Threadlinqs priority:** 4.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability - **Published:** 2026-05-12 ## Is CVE-2025-40948 being exploited? No public exploitation evidence for CVE-2025-40948 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-05-12. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited. ## Affected products and versions - [Siemens](https://intel.threadlinqs.com/vendors/siemens): RUGGEDCOM ROX MX5000, RUGGEDCOM ROX MX5000RE, RUGGEDCOM ROX RX1400, RUGGEDCOM ROX RX1500, RUGGEDCOM ROX RX1501, RUGGEDCOM ROX RX1510, RUGGEDCOM ROX RX1511, RUGGEDCOM ROX RX1512, RUGGEDCOM ROX RX1524, RUGGEDCOM ROX RX1536, RUGGEDCOM ROX RX5000 ## How to fix CVE-2025-40948 Vendor advisory: [https://cert-portal.siemens.com/productcert/html/ssa-973901.html](https://cert-portal.siemens.com/productcert/html/ssa-973901.html). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory. ## Threat activity tracking CVE-2025-40948 1 tracked threat in the Threadlinqs corpus references CVE-2025-40948, either in the campaign’s CVE list or as an indicator on the campaign record. - [Siemens Ruggedcom ROX II Three-Stage Zero-Day Exploit Chain (CVE-2025-40948, CVE-2025-40947, CVE-2025-40949)](https://intel.threadlinqs.com/threat/TL-2026-1442) — CRITICAL · 2026-07-17 ## Sources Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-07-17. This product uses the NVD API but is not endorsed or certified by the NVD. **Other references** - [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/html/ssa-973901.html) Canonical: https://intel.threadlinqs.com/cve/CVE-2025-40948 Full detection coverage and IOCs for threats exploiting CVE-2025-40948 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp