CVE-2025-41016 is an access control vulnerability classified under CWE-862 affecting Davantis DFUSION versions prior to 6.186.1. The vulnerability arises due to inadequate authorization checks on the web endpoint /alarms/<ALARM_ID>/<MEDIA>, where the MEDIA parameter can be 'snapshot' or 'video.mp4'. This endpoint serves media files captured by security cameras in response to alarm events. Because the system fails to verify whether the requester is authorized to access these resources, an unauthenticated attacker can retrieve sensitive images and videos without any credentials or user interaction. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity, with attack vector network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and high impact on confidentiality (VC:H) but no impact on integrity or availability. The exposure of surveillance footage can lead to serious privacy violations, intelligence gathering by malicious actors, and potential operational security risks. No public exploits have been reported yet, but the ease of exploitation and the critical nature of the data make it a significant threat. The vulnerability was reserved in April 2025 and published in November 2025, with no patch links currently available, suggesting that remediation may be pending or in progress. The vulnerability affects organizations using Davantis DFUSION for physical security monitoring, especially those relying on video surveillance triggered by alarms.

The primary impact of CVE-2025-41016 on European organizations is the unauthorized disclosure of sensitive surveillance media, which can compromise privacy and security. Organizations in sectors such as critical infrastructure, transportation, government facilities, and private enterprises using Davantis DFUSION for alarm-triggered video monitoring could have confidential footage exposed to attackers. This exposure risks violating GDPR and other privacy regulations, potentially leading to legal penalties and reputational damage. Additionally, attackers could use the extracted media to conduct further reconnaissance or plan physical or cyber attacks. The lack of authentication and user interaction requirements increases the likelihood of exploitation, especially if the vulnerable endpoints are accessible from external networks. The vulnerability could also undermine trust in security operations and cause operational disruptions if organizations need to disable affected systems temporarily. Given the high confidentiality impact and the critical nature of surveillance data, the threat is significant for European entities relying on this technology.

1. Immediate mitigation should focus on restricting network access to the vulnerable endpoints by implementing firewall rules or network segmentation to limit access to trusted internal users only. 2. Monitor and audit access logs for unusual or unauthorized requests to the /alarms/<ALARM_ID>/<MEDIA> endpoint to detect potential exploitation attempts. 3. Coordinate with Davantis to obtain and apply official patches or updates as soon as version 6.186.1 or later becomes available, as this will address the missing authorization checks. 4. If patches are not yet available, consider deploying web application firewalls (WAFs) with custom rules to block unauthorized access patterns targeting the media retrieval endpoints. 5. Conduct a thorough review of all access control configurations in the DFUSION system to ensure proper authorization enforcement on all sensitive resources. 6. Educate security and IT teams about the vulnerability and the importance of rapid response to suspicious activity related to surveillance media. 7. Evaluate alternative or supplementary surveillance solutions with robust access controls as a longer-term risk reduction strategy. 8. Ensure compliance teams are involved to assess privacy impact and prepare for potential incident response related to data exposure.