CVE-2025-21547 is a critical vulnerability affecting Oracle Hospitality OPERA 5, specifically in the Opera Servlet component. With a CVSS score of 9.1, this vulnerability poses a significant risk as it allows unauthenticated attackers with network access to exploit the system via HTTP. Successful exploitation can lead to unauthorized access to sensitive data or complete access to all data within Oracle Hospitality OPERA 5. Furthermore, attackers could cause a denial of service by initiating frequent crashes of the application.
The urgency for organizations to address this vulnerability is high. The nature of the vulnerability and its potential impact on critical operations necessitate immediate action to secure the affected systems. Organizations utilizing supported versions 5.6.19.20, 5.6.25.8, 5.6.26.6, and 5.6.27.1 should prioritize patching to mitigate the risks associated with this threat.
The vulnerability was published on January 21, 2025, and remains under active analysis. Given its critical severity, organizations must ensure that they are aware of the potential ramifications of an exploit, which could lead to unauthorized access and service disruptions.
Organizations should take proactive measures to protect their systems, including applying the latest patches provided by Oracle and continuously monitoring their environments for any signs of exploitation.
Vulnerability Details
CVE-2025-21547 is categorized as a vulnerability in Oracle Hospitality OPERA 5, specifically affecting the Opera Servlet. The CVSS 3.1 base score is 9.1, indicating critical severity, with high impacts on confidentiality and availability. Affected versions include 5.6.19.20, 5.6.25.8, 5.6.26.6, and 5.6.27.1. The vulnerability is classified under CWE-400, which pertains to the concept of Uncontrolled Resource Consumption.
The vulnerability can be exploited by attackers over a network with low complexity and no privileges required. User interaction is not necessary, making it easily exploitable by malicious actors.
Technical Analysis
The root cause of CVE-2025-21547 lies in the design of the Opera Servlet component. The attack vector is network-based, allowing attackers to exploit the vulnerability remotely. The attack complexity is low, meaning that even individuals with limited technical skills can perform the attack. As the attacker does not require any privileges, the barrier to entry is minimal. Furthermore, the exploit does not necessitate user interaction, which increases the likelihood of successful exploitation.
In terms of impact, the vulnerability has a high confidentiality impact, potentially exposing critical data, and a high availability impact, which can lead to denial of service. The integrity impact is noted as none, indicating that the data itself may not be altered during exploitation, but access to it can be compromised.
Risk & Impact Analysis
The real-world deployment risk of CVE-2025-21547 is significant. Organizations that rely on Oracle Hospitality OPERA 5 for critical operations face potential unauthorized data access and service interruptions. This vulnerability's ability to be exploited over the network without authentication further exacerbates its risk profile.
Given the critical nature of the vulnerability, organizations should address it immediately as part of their regular patch management cycle. The blast radius could be extensive due to the sensitive nature of the data handled by hospitality applications, emphasizing the urgency for organizations to mitigate this risk.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Oracle Hospitality OPERA 5 include 5.6.19.20, 5.6.25.8, 5.6.26.6, and 5.6.27.1. Organizations should ensure they have applied the latest patches to mitigate the risk associated with this vulnerability.
Mitigation & Remediation
Organizations should implement immediate patching for Oracle Hospitality OPERA 5 to prevent exploitation. The latest patches can be found on the Oracle security alerts page. Regular patch management processes should include checking for vulnerabilities in third-party applications. Additionally, organizations can enhance security by implementing network controls to restrict access to the application.
For further guidance on ensuring application security, organizations can consider engaging in penetration testing services to identify vulnerabilities and verify remediation effectiveness.
Detection Guidance
Organizations should monitor for any unusual activity or access patterns within Oracle Hospitality OPERA 5. Log indicators such as unauthorized access attempts or application crashes can signify exploitation attempts. Additionally, behavioral anomalies that deviate from normal operational patterns should be investigated promptly.
AppSecure Threat Intelligence Insight
CVE-2025-21547 illustrates the ongoing need for organizations to maintain vigilance regarding vulnerabilities in widely used applications. As attackers increasingly exploit known vulnerabilities, it is essential for security teams to adopt a proactive approach to vulnerability management.
The pattern of vulnerabilities in critical applications highlights the importance of regular security assessments. Engaging in effective vulnerability management programs can help organizations stay ahead of potential threats.
Furthermore, the strategic implementation of continuous security testing allows organizations to identify and address vulnerabilities before they can be exploited. This is particularly crucial in the context of critical applications such as Oracle Hospitality OPERA 5.
For insights on effective security practices, organizations can review best practices in penetration testing methodology to enhance their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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