CVE-2025-45156 identifies a vulnerability in the Splashin iOS application version 2.0, specifically related to the enforcement of server-side interval restrictions for location updates for free-tier users. The application is designed to limit how frequently free-tier users can send location updates to the server, presumably to manage resource usage and prevent abuse. However, this vulnerability indicates that the server-side controls intended to enforce these interval restrictions are not properly implemented or enforced. As a result, free-tier users can potentially send location updates more frequently than intended. This flaw could allow an attacker or a user to bypass usage limitations, leading to excessive location update requests being processed by the server. While the vulnerability does not directly expose sensitive data or allow unauthorized access, it can lead to resource exhaustion on the backend, degrade service quality, or cause denial of service conditions. The lack of a CVSS score and absence of known exploits in the wild suggest this vulnerability is newly published and has not yet been widely exploited. The vulnerability does not specify affected versions beyond Splashin iOS v2.0, and no patches or mitigations have been linked yet. The vulnerability is classified as a server-side enforcement failure, which is a common issue in applications that rely on client-server interactions for usage control. Since the vulnerability relates to location update frequency, it may also have privacy implications if attackers use it to flood the system with location data, potentially impacting data integrity and availability.

For European organizations, the impact of this vulnerability depends largely on their use of the Splashin iOS application, particularly the free-tier service. Organizations relying on this app for location-based services, asset tracking, or employee monitoring could face degraded service performance due to excessive location update requests overwhelming backend systems. This could lead to denial of service or increased operational costs due to higher server load. Additionally, if location data is used for critical decision-making or compliance reporting, the integrity and reliability of this data could be compromised. Privacy concerns may arise if attackers exploit the vulnerability to generate large volumes of location data, potentially complicating data management and regulatory compliance under GDPR. However, since the vulnerability does not directly expose sensitive data or allow unauthorized access, the confidentiality impact is limited. The absence of known exploits reduces immediate risk, but the potential for abuse remains, especially if attackers develop automated tools to exploit the lack of interval enforcement. Organizations using paid tiers or other versions of the app are less likely to be affected. Overall, the vulnerability poses a moderate operational risk with potential indirect privacy implications for European entities using the affected free-tier service.

To mitigate this vulnerability, European organizations using Splashin iOS v2.0 free-tier should first monitor their backend systems for unusual spikes in location update traffic that could indicate exploitation attempts. They should engage with the vendor to obtain patches or updates that enforce proper server-side interval restrictions. In the absence of vendor patches, organizations can implement rate limiting and anomaly detection at the network or application firewall level to restrict excessive location update requests from individual users or IP addresses. Additionally, organizations should review their usage policies and consider migrating critical operations to paid tiers or alternative solutions that enforce stricter usage controls. Logging and alerting mechanisms should be enhanced to detect abnormal location update patterns. From a privacy and compliance perspective, organizations must ensure that any increased data volume does not violate GDPR principles and that data retention and processing policies are adjusted accordingly. Finally, educating users about the risks of using free-tier services with known limitations can reduce inadvertent exploitation.