CISA KEV Adds CVE-2025-5086: What You Must Do
TL;DR (for busy teams)
- What happened: CISA added CVE-2025-5086 (DELMIA Apriso deserialization → possible RCE) to the Known Exploited Vulnerabilities (KEV) catalogue on September 11, 2025, with a due date of October 2, 2025, for U.S. federal agencies.
- Who’s exposed: Manufacturers and enterprises running DELMIA Apriso (Releases 2020–2025).
- What to do now: Inventory Apriso, patch per vendor, and add compensating controls (network segmentation, WAF rules) if you can’t patch immediately. Validate with targeted retests and log reviews.
What CISA added—and why it matters
CISA’s KEV update flags CVE-2025-5086 as actively exploited and mandates remediation for FCEB agencies by October 2, 2025. Treat this as your internal deadline, too—exploitation in the wild and a KEV listing are strong signals of real-world risk, not a hypothetical.
Vulnerability summary: The vendor describes deserialization of untrusted data in DELMIA Apriso affecting Release 2020 through Release 2025, which can enable remote code execution if abused. Track it under CWE-502.
Enterprise exposure check (fast triage)
Where Apriso typically lives: Apriso is a Manufacturing Execution System (MES) / MOM platform used on production networks to orchestrate shop-floor operations, often adjacent to PLM/ERP integrations. If you operate multi-site plants or Industry 4.0 programs, Apriso may sit in your OT/Manufacturing segment with connectivity to corporate IT.
How to find it quickly:
- CMDB & contracts: Search for “DELMIA,” “Apriso,” or “3DEXPERIENCE” in software inventories, MES line-of-business entries, or vendor management records. (Cross-check license/maintenance portals.)
- Network & asset scans: Look for known Apriso servers in manufacturing VLANs/segments and any hosts talking to PLM/ERP integrations (common in MOM/MES deployments).
- Talk to plant ops: Production/quality owners often know the Apriso footprint, integrations, and maintenance windows. (Apriso commonly centralizes global MES standardization across plants.)
Quick outside-in check (won’t replace patching): run a perimeter snapshot with our Website Vulnerability Scanner online free to spot obvious web misconfigs while you line up downtime windows. Then schedule a deeper web application penetration testing service for authenticated paths that a light scan can’t reach.
Screenshot of our Free Website Vulnerability Scanner Homepage
Sample PDF report by our tool to check Website Vulnerability
Remediation options (risk-prioritized)
- Apply the vendor’s remediation
Follow Dassault Systèmes’ advisory for CVE-2025-5086 and the linked remediation guidance in the support portal. Prioritize instances exposed to untrusted networks or with internet-accessible interfaces. - If patching is delayed, add compensating controls
- Network segmentation/access control: Restrict Apriso to trusted OT segments behind VPN/zero-trust gateways; deny inbound from untrusted networks. MES typically doesn’t need broad internet ingress.
- Web/edge protections: Add WAF rules to block known deserialization probes/payload patterns and enforce strict request size/serialization type allowlists where feasible. (These are compensating—not cures—until the vendor fix is applied.)
- Harden integrations: Review app servers, integration endpoints, and any custom extensions that deserialize user-controlled data; enforce allowlists and input validation, reduce reflection-based gadget exposure, and rotate credentials/secrets touched by the integration tier.
- Change management & documentation
Record the remediation activity against this KEV in your risk register, including evidence (screenshots, change tickets, hash/version proofs). Tie the control implementation back to your frameworks (e.g., ISO 27001, SOC 2, PCI DSS).
Need hands-on help?
- Risk Assessment Services → https://www.pentesttesting.com/risk-assessment-services/
- Remediation Services → https://www.pentesttesting.com/remediation-services/
(We also deliver targeted ISO 27001, SOC 2, PCI DSS, and HIPAA remediation programs if your audit is looming.)
Verification & proof (so you can close the ticket)
- Functional retest: Re-execute the exploit preconditions (safely) or run equivalent checks to prove the vulnerable code path is closed. If you lack safe test cases, book a focused web application penetration testing retest window.
- Code/config review: Confirm the patched version is deployed across all Apriso nodes; verify serialization libraries/configs match vendor recommendations.
- Logging & detection: Enable verbose app/server logs for blocked deserialization attempts and set alerts for anomalous payloads, unexpected class loading, or serialization exceptions.
- Attestation bundle: Capture before/after evidence, map to CWE-502 and your control set (e.g., OWASP ASVS L2), and attach to the risk record with change tickets and screenshots of blocked attempts.
Where does this fit in your continuous pipeline
- Intake: New KEV → create/refresh a risk item referencing CVE-2025-5086 with the KEV due date (Oct 2, 2025).
- Discovery: Use CMDB/network scans and plant ops interviews to confirm scope.
- Fix: Apply vendor remediation; add WAF/network compensations while scheduling maintenance.
- Prove: Retest + log review → attach evidence; close with sign-off from risk owner and audit.
- Repeat: Subscribe to KEV updates and vendor advisories to keep your pentest cloud and web app pentesting service cadence tied to real-world exploitation.
How Pentest Testing Corp can help (and fast)
- CVE-2025-20352: Cisco IOS/IOS XE SNMP 0-Day — Fix Now
- Risk assessment & prioritization for KEV items that affect manufacturing/OT-adjacent apps.
- Affordable web app penetration testing targeted at internet-facing Apriso portals or adjacent custom apps.
- Remediation implementation & validation with audit-ready artifacts for ISO 27001, SOC 2, PCI DSS, HIPAA.
- Laravel ecosystem hardening if your digital stack includes Laravel (see our developer-focused posts).
- Book a KEV remediation consult → https://www.pentesttesting.com/remediation-services/
- Run a free outside-in snapshot now → https://free.pentesttesting.com/
- See our audit-ready risk assessments → https://www.pentesttesting.com/risk-assessment-services/
🔐 Frequently Asked Questions (FAQs)
Find answers to commonly asked questions about CISA KEV Adds CVE-2025-5086.
