CVE-2025-24815: Nokia MantaRay NM File Upload Validation Flaw – Patch Guidance

Technical summary

CVE-2025-24815 is a CWE-434 unrestricted file upload vulnerability in Nokia MantaRay NM. The application does not implement adequate file type validation on upload functionality, allowing an authenticated attacker with local access to bypass intended restrictions. The CVSS 3.1 score of 7.8 reflects high impact across confidentiality, integrity, and availability when successfully exploited. The attack vector is local, requiring prior authentication, but no user interaction is necessary once the upload mechanism is triggered.

Business impact

Successful exploitation could enable unauthorized file placement on critical network management infrastructure. Given MantaRay NM's role in telecom/carrier network operations, compromised file uploads could lead to service disruption, unauthorized configuration changes, or establishment of persistent backdoor access. The impact extends beyond the directly affected system to potentially encompass managed network assets. Organizations relying on MantaRay NM for network orchestration face operational continuity and security posture risks.

Affected systems

Nokia MantaRay NM is affected. Determine your specific version against Nokia's advisory to confirm applicability. MantaRay NM is commonly deployed in carrier and service provider environments for network management and orchestration. Environments with shared administrative access or where multiple operators interact with the platform warrant particular attention.

Exploitability

Exploitation requires valid system credentials and local access, which moderates the immediate external attack surface. However, insider threats, compromised accounts, or lateral movement from adjacent systems present realistic paths to exploitation. The absence of exploit code in public repositories at publication does not diminish the practical risk—insufficient file validation is a well-understood attack pattern. Organizations should assume exploitation difficulty is low for adversaries with authenticated access.

Remediation

Nokia has released patches addressing this vulnerability. Identify the patched version from the official Nokia security advisory and plan immediate deployment in your environment. Testing should confirm file upload restrictions are enforced. Parallel mitigations include restricting local system access through principle of least privilege, monitoring file upload activity, and disabling upload functionality if operationally feasible during patching.

Patch guidance

Consult Nokia's security advisory for the specific patched version applicable to your MantaRay NM deployment. Patches should be validated in a non-production environment before production rollout to ensure compatibility with your network management workflows. Establish a change window that minimizes disruption to managed network operations. After patching, verify that file type validation is functioning by testing upload restrictions with various file types.

Detection guidance

Monitor MantaRay NM logs for file upload activity, focusing on operations from authenticated users with unusual upload patterns or unexpected file types. Look for evidence of files persisting in unexpected directories. Network-level detection can target unusual file access or modification patterns on the system hosting MantaRay NM. Endpoint detection and response (EDR) tools should flag suspicious process execution originating from uploaded files. Audit logs should be reviewed for privilege escalation events following file uploads.

Why prioritize this

This vulnerability scores HIGH (7.8 CVSS) and requires immediate attention because: it affects network management infrastructure critical to carrier operations; successful exploitation grants file placement capability with integrity and availability impact; and the attack requires only authenticated local access, a realistic threat in environments with multiple operators. The absence of KEV designation does not diminish urgency—patch rapidly before adversaries develop weaponized proof-of-concepts targeting this common validation gap.

Risk score, explained

The CVSS 3.1 score of 7.8 (HIGH severity) reflects: local attack vector limiting initial exposure; requirement for low-privilege authentication reducing probability from fully unauthenticated attacks; but critically, high impact across all three security properties (confidentiality, integrity, availability) once access is achieved. File upload validation failures are straightforward to exploit for insiders and represent a direct path to code execution or persistent compromise.

Frequently asked questions