CVE-2025-0980 in SR Linux
Summary
by MITRE • 01/07/2026
Nokia SR Linux is vulnerable to an authentication vulnerability allowing unauthorized access to the JSON-RPC service. When exploited, an invalid validation allows JSON RPC access without providing valid authentication credentials.
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Analysis
by VulDB Data Team • 01/07/2026
The vulnerability identified as CVE-2025-0980 affects Nokia SR Linux network devices, specifically targeting the JSON-RPC service that provides programmatic access to device management functions. This authentication flaw represents a critical security weakness that undermines the fundamental security posture of these network appliances. The vulnerability resides in the validation mechanism responsible for verifying authentication credentials before granting access to the JSON-RPC interface, which is commonly used for automated network management and configuration operations.
The technical implementation of this vulnerability stems from inadequate input validation within the authentication process for the JSON-RPC service. When legitimate authentication credentials are not properly verified or validated, the system inadvertently permits access to privileged functions without requiring proper authorization. This flaw falls under the category of weak authentication mechanisms and can be classified as CWE-287, which addresses improper authentication issues. The vulnerability allows an attacker to bypass the normal authentication flow and gain access to the device's management interface through the JSON-RPC protocol, which typically handles configuration changes, monitoring commands, and operational control functions.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with the ability to execute arbitrary commands on the network device through the JSON-RPC interface. This capability enables potential attackers to modify device configurations, extract sensitive information, or even disrupt network operations. The vulnerability affects the confidentiality, integrity, and availability of the network infrastructure, as unauthorized users could manipulate device settings, disable security features, or create backdoor access points. Given that JSON-RPC services are often used for automated network management, this vulnerability could be exploited to compromise entire network segments managed through these devices.
Network administrators face significant operational challenges when addressing this vulnerability, as it requires immediate attention to prevent potential exploitation. The risk assessment should consider the potential for lateral movement within the network if the device serves as a gateway or core component in the network topology. Mitigation strategies should include immediate patch deployment from Nokia, implementation of network segmentation to limit access to the JSON-RPC service, and enhanced monitoring of authentication attempts. Organizations should also consider implementing additional authentication layers such as IP-based access controls or multi-factor authentication mechanisms to reduce the attack surface. The vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation, as attackers could leverage this flaw to gain unauthorized access to network devices and potentially escalate privileges within the network infrastructure.