The vulnerability identified as CVE-2025-13955 affects EZCast Pro II devices running firmware version 1.17478.146. It involves the use of insufficiently random values (CWE-330) in generating the default Wi-Fi password for the device's Access Point functionality. Specifically, the default password can be predicted by attackers who can observe device identifiers broadcast by the dongle, such as MAC addresses or serial numbers. This predictability allows attackers within Wi-Fi range to calculate the password without any prior authentication or user interaction, gaining unauthorized access to the device. Once connected, attackers may manipulate the device’s network functions, intercept data streams, or pivot to other network resources. The vulnerability is rated critical with a CVSS 4.0 score of 9.3, reflecting its high impact on confidentiality, integrity, and availability, combined with low attack complexity and no required privileges. The flaw arises from poor randomization in password generation algorithms, a classic cryptographic weakness. Although no public exploits have been reported yet, the vulnerability’s characteristics make it highly exploitable in practice. The lack of vendor patches at the time of publication increases the urgency for mitigation. This issue is particularly concerning for environments where EZCast Pro II devices are used for wireless presentations or collaborative meetings, as unauthorized access could lead to data leakage or disruption of services.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of wireless communications facilitated by EZCast Pro II devices. Unauthorized access to the device’s Access Point can allow attackers to intercept sensitive presentation data, inject malicious content, or use the device as a foothold to access internal networks. This is especially critical in sectors such as finance, government, education, and healthcare, where sensitive information is frequently shared during meetings. The availability of collaboration tools could also be disrupted, impacting business continuity. Additionally, the vulnerability could be exploited in public or semi-public environments like conference centers or corporate offices, increasing the attack surface. Given the high CVSS score and ease of exploitation, organizations face a tangible threat that could lead to data breaches, reputational damage, and regulatory non-compliance under GDPR if personal data is exposed. The lack of authentication and user interaction requirements further exacerbate the risk, making it feasible for attackers to operate stealthily within Wi-Fi range.

Immediate mitigation steps include disabling the Access Point functionality on EZCast Pro II devices if not strictly necessary, or restricting its use to secure, controlled environments. Network segmentation should be implemented to isolate these devices from critical internal networks, minimizing lateral movement opportunities. Organizations should monitor wireless networks for unauthorized connections and anomalous device behavior, employing wireless intrusion detection systems (WIDS). Since no vendor patches are currently available, organizations must engage with EZCast for updates and apply firmware patches promptly once released. Additionally, consider replacing affected devices with alternatives that use robust randomization for password generation. Educate staff about the risks of connecting to unknown or unsecured wireless access points and enforce policies that limit device usage to trusted networks. Finally, conduct regular security assessments of wireless infrastructure to detect and remediate similar weaknesses proactively.