CVE-2025-7406: Nokia MantaRay NM Sudo Privilege Escalation – Local Root Access

Technical summary

This vulnerability stems from improper privilege management in sudo configuration (CWE-269). A local administrator can leverage the sudo mechanism to escalate from administrative privileges to root access without additional authentication or user interaction. The attack surface is limited to local users with existing admin rights, and exploitation results in unrestricted root-level command execution and full filesystem access. The CVSS 3.1 score of 7.8 (HIGH) reflects high impact across confidentiality, integrity, and availability with low attack complexity and low privilege requirements relative to the starting privilege level.

Business impact

Compromise of a MantaRay NM host via this vulnerability results in complete system takeover by an attacker with local admin access. This enables unauthorized data exfiltration, malware installation, system modification, and lateral movement within the network. For organizations using MantaRay NM in critical infrastructure, network management, or compliance-sensitive roles, root compromise directly undermines system integrity and creates audit/regulatory violations. The threat is primarily insider-focused or post-compromise escalation in multi-tenant or shared-access environments.

Affected systems

Nokia MantaRay NM is vulnerable across affected versions. Verify your deployment against the vendor advisory for specific version ranges in scope. Organizations should inventory MantaRay NM instances and assess their exposure based on local user access policies and administrative privilege distribution.

Exploitability

Exploitation requires a local user already holding administrative privileges on the host—not a remote or unauthenticated attack. Complexity is low once the attacker has local admin credentials. There is no user interaction requirement, and successful exploitation is deterministic. The restriction to local attackers with existing admin privileges reduces opportunistic risk, but makes it a critical path for insider threats and post-compromise lateral escalation scenarios.

Remediation

Apply the security update from Nokia when available. Temporarily, restrict the set of commands accessible via sudo for affected administrative accounts to only those strictly necessary for operations—removing unrestricted sudo access or commands that permit shell invocation. This reduces the attack surface without requiring immediate patching, though it does not eliminate the underlying vulnerability. Combined with strict audit logging of sudo activity, this provides interim risk reduction.

Patch guidance

Contact Nokia for vendor advisory details and patch availability for MantaRay NM. Apply patches to all affected instances as soon as validated in a non-production environment. Coordinate with your network operations team to minimize service interruption. After patching, review and validate sudo policies to ensure they remain least-privilege even post-remediation.

Detection guidance

Monitor sudo logs (typically /var/log/auth.log or syslog) for privilege escalation attempts by administrative accounts, particularly execution of shell commands, editing system files, or invoking other privilege-escalation utilities. Implement real-time alerting on sudo deny events and unusual sudo usage patterns from administrative accounts. Host-based intrusion detection systems (HIDS) configured to flag suspicious sudo invocations will help identify exploitation attempts. Endpoint detection and response (EDR) tools should be tuned to flag post-sudo root process spawning from administrative user sessions.

Why prioritize this

HIGH severity with a 7.8 CVSS score and complete system compromise potential places this in the upper tier of patch priorities. However, the requirement for local administrative privileges significantly reduces the attack surface compared to remote escalation flaws. Prioritize patching for systems with multiple local users, shared administrative access, or roles supporting untrusted code execution. For single-user or tightly controlled administrative environments, this can be sequenced after remote-execution vulnerabilities, though the interim sudo restriction should still be applied promptly.

Risk score, explained

The CVSS 3.1 score of 7.8 reflects: (1) local attack vector with no remote component, (2) low attack complexity once privileges are obtained, (3) low privilege requirements relative to impact (local admin to root), (4) high confidentiality, integrity, and availability impact (full system compromise), and (5) no scope boundary crossing. The score appropriately elevates this above medium due to the severity of impact, while the local-only attack vector prevents a critical rating. Contextual risk in your environment depends heavily on administrative privilege distribution and insider threat posture.

Frequently asked questions