CVE-2025-21547

Summary

CVE-2025-21547 is a vulnerability affecting the Oracle Hospitality OPERA 5 product, specifically the Opera Servlet component. Affected versions include 5.6.19.20, 5.6.25.8, 5.6.26.6, and 5.6.27.1. This issue allows unauthenticated attackers with network access via HTTP to compromise the system. Once exploited, attackers can gain unauthorized access to critical data or complete access to all Oracle Hospitality OPERA 5 data. Additionally, they may cause a hang or frequent crashes (Denial of Service) of Oracle Hospitality OPERA 5. The Base Score of this vulnerability, according to the CVSS 3.1 metric, is 9.1, indicating high severity levels for both confidentiality and availability impacts.

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