CVE-2025-58664 is a medium-severity vulnerability classified under CWE-862, indicating a Missing Authorization issue in the Azizul Hasan Text To Speech (TTS) Accessibility software. This vulnerability arises from incorrectly configured access control security levels, allowing users with limited privileges (PR:L - Privileges Required: Low) to perform unauthorized actions that impact the integrity of the system. The vulnerability does not require user interaction (UI:N) and can be exploited remotely over the network (AV:N - Attack Vector: Network) without authentication barriers that would normally prevent unauthorized access. The affected product versions are unspecified but include all versions up to 1.9.20. The CVSS 3.1 base score of 4.3 reflects a medium severity, primarily due to the limited impact on confidentiality and availability, but with a potential integrity impact. Specifically, the vulnerability allows an attacker to bypass authorization checks, potentially modifying or manipulating TTS accessibility features or data without proper permissions. Although no known exploits are currently reported in the wild, the vulnerability's presence in accessibility software, which may be integrated into various applications and platforms, poses a risk of unauthorized modifications that could degrade user experience or introduce malicious behavior in assistive technologies. The lack of available patches at the time of publication emphasizes the need for proactive mitigation and monitoring.

For European organizations, this vulnerability could have several implications. Accessibility tools like Text To Speech are often integrated into public service platforms, educational software, and enterprise applications to comply with accessibility regulations such as the EU Web Accessibility Directive. Unauthorized modifications due to missing authorization controls could lead to misinformation, denial of accessibility features, or manipulation of content read aloud to users with disabilities, undermining compliance efforts and potentially exposing organizations to legal and reputational risks. Furthermore, attackers exploiting this flaw could alter TTS outputs to mislead users or disrupt communication channels, impacting operational integrity. Since the vulnerability requires low privileges and no user interaction, it could be leveraged by insiders or remote attackers who have gained limited access, increasing the risk profile. The medium CVSS score suggests moderate risk, but the specific context of accessibility software means the impact on vulnerable user groups could be significant, especially in sectors like healthcare, government, and education where accessibility tools are critical.

Given the absence of official patches, European organizations should implement compensating controls immediately. These include: 1) Restricting network access to the TTS Accessibility service to trusted users and systems only, using network segmentation and firewall rules. 2) Enforcing strict role-based access controls (RBAC) and auditing all privilege assignments to ensure minimal necessary permissions are granted. 3) Monitoring logs for unusual access patterns or unauthorized attempts to modify TTS settings or outputs. 4) Temporarily disabling or isolating the affected TTS Accessibility component if feasible until a patch is released. 5) Engaging with the vendor or community to obtain updates or workarounds and applying them promptly. 6) Conducting user training to raise awareness about the risks of unauthorized access and encouraging reporting of anomalies. 7) Reviewing integration points where the TTS Accessibility software interfaces with other systems to ensure no cascading effects occur from exploitation. These targeted actions go beyond generic advice by focusing on access control hardening, monitoring, and isolation specific to the affected product and its deployment context.