CVE-2025-27261 is a high-severity SQL injection vulnerability (CWE-89) identified in the Ericsson Indoor Connect 8855 product. This vulnerability arises from improper neutralization of special elements used in SQL commands, allowing an attacker to inject malicious SQL code into the backend database queries. Exploitation of this flaw can lead to unauthorized disclosure, modification, or deletion of sensitive data stored within the system. The vulnerability has a CVSS 4.0 base score of 8.7, indicating a high impact with network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L, meaning some limited privileges are needed), no user interaction (UI:N), and high impact on confidentiality, integrity, and availability (VC:H, VI:H, VA:H). The vulnerability does not require user interaction and can be exploited remotely, making it a significant risk for affected deployments. Although no known exploits are currently reported in the wild, the nature of SQL injection vulnerabilities means that once exploited, attackers can perform a wide range of malicious activities such as data exfiltration, unauthorized data manipulation, or even pivoting to other parts of the network. The Ericsson Indoor Connect 8855 is typically used to enhance indoor cellular coverage and capacity, often deployed in enterprise or carrier environments, which may contain sensitive operational or customer data. The lack of available patches at the time of publication increases the urgency for organizations to implement mitigations to reduce exposure.

For European organizations, the impact of this vulnerability can be substantial. Ericsson is a major telecommunications vendor with a significant presence across Europe, especially in countries with advanced telecom infrastructure. Exploitation could lead to leakage of sensitive customer or operational data, disruption of indoor cellular services, and potential regulatory consequences under GDPR due to unauthorized data disclosure. Enterprises relying on Indoor Connect 8855 for critical indoor cellular coverage may experience degraded service availability or integrity, impacting business operations and customer satisfaction. The high confidentiality and integrity impact means that attackers could manipulate stored data, potentially affecting billing, authentication, or network management functions. Given the critical role of telecommunications infrastructure in Europe, successful exploitation could also have cascading effects on other dependent services and sectors.

Since no patches are currently available, European organizations should immediately implement compensating controls. These include: 1) Restricting network access to the management interfaces of Indoor Connect 8855 devices using firewalls or network segmentation to limit exposure to trusted administrators only. 2) Monitoring logs and network traffic for unusual SQL query patterns or unexpected database errors that may indicate attempted exploitation. 3) Applying strict input validation and sanitization at any integration points or management portals interacting with the device, if customizable. 4) Employing Web Application Firewalls (WAFs) or Intrusion Prevention Systems (IPS) capable of detecting and blocking SQL injection attempts targeting these devices. 5) Coordinating with Ericsson support for any interim firmware updates or recommended configuration changes. 6) Preparing incident response plans specific to potential exploitation scenarios. Once official patches are released, organizations must prioritize timely deployment to fully remediate the vulnerability.