CVE-2025-54695 is a medium-severity vulnerability classified under CWE-862 (Missing Authorization) affecting the HasTech HT Mega product up to version 2.9.0. The vulnerability arises from improperly configured access control mechanisms within HT Mega, which allow an attacker with limited privileges (PR:L - privileges required: low) to exploit missing authorization checks. The CVSS 3.1 base score is 5.4, indicating a moderate risk. The vector metrics specify that the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), requiring no user interaction (UI:N). The scope is unchanged (S:U), meaning the impact is confined to the vulnerable component. The impact affects integrity (I:L) and availability (A:L) but not confidentiality (C:N). This suggests that an attacker can modify or disrupt data or services but cannot directly access confidential information. The vulnerability is due to incorrect access control security levels, which may allow unauthorized modification or denial of service conditions within the HT Mega environment. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was reserved on July 28, 2025, and published on August 14, 2025, indicating recent disclosure. HT Mega is a product by HasTech, likely used in web or application environments, where access control is critical for maintaining security boundaries.

For European organizations using HT Mega, this vulnerability could lead to unauthorized modification of data or disruption of services, impacting business operations and potentially causing downtime or data integrity issues. Since confidentiality is not directly impacted, data breaches involving sensitive information are less likely. However, the ability to alter or disrupt data could affect transactional integrity, reporting accuracy, or system availability, which may have regulatory and compliance implications under frameworks like GDPR if service disruptions affect personal data processing. The medium severity suggests that while the threat is not critical, it still poses a tangible risk, especially in environments where HT Mega is integrated into critical workflows or customer-facing applications. Organizations relying on HT Mega for e-commerce, content management, or other web services should be particularly cautious, as attackers with low privileges could escalate their impact by exploiting missing authorization controls.

Organizations should immediately review and audit access control configurations within HT Mega installations to ensure proper authorization checks are enforced for all sensitive operations. Since no patches are currently linked, temporary mitigations include restricting network access to HT Mega administrative interfaces to trusted IP ranges and enforcing strict user role management to minimize privilege exposure. Monitoring and logging access attempts and changes within HT Mega can help detect exploitation attempts early. Additionally, organizations should prepare to apply vendor patches promptly once available. Conducting penetration testing focused on access control weaknesses in HT Mega environments is recommended to identify and remediate similar authorization issues proactively. Implementing web application firewalls (WAF) with custom rules to detect and block suspicious requests targeting HT Mega endpoints may also reduce risk.