CVE-2025-61755 is a vulnerability identified in Oracle GraalVM for JDK, specifically affecting versions 17.0.16 and 21.0.8. The flaw resides in the compiler component of the product and allows an unauthenticated attacker with network access via multiple protocols to compromise the system. The exploitation is considered difficult due to the high attack complexity, and no user interaction or privileges are required. Successful exploitation results in unauthorized read access to a subset of data accessible through Oracle GraalVM for JDK, impacting confidentiality but not integrity or availability. The CVSS 3.1 base score is 3.7, reflecting a low severity primarily due to limited confidentiality impact and the difficulty of exploitation. The vulnerability does not allow code execution or denial of service, and no known exploits have been reported in the wild as of the publication date. The CWE classification is CWE-862, indicating improper authorization. No patches were linked at the time of disclosure, suggesting that Oracle may be preparing updates or that mitigations are currently limited to access controls and network restrictions.

For European organizations, the primary impact of CVE-2025-61755 is the potential unauthorized disclosure of sensitive data accessible via Oracle GraalVM for JDK. While the scope of data exposure is limited and does not include modification or disruption, any leakage of confidential information can have regulatory and reputational consequences, especially under GDPR. Organizations running affected versions in network-exposed environments risk attackers gaining read access to internal data subsets. This could be leveraged for further reconnaissance or combined with other vulnerabilities for more severe attacks. The difficulty of exploitation reduces immediate risk, but the presence of this vulnerability in critical Java runtime environments used in enterprise applications means that high-value targets such as financial institutions, government agencies, and technology firms could be affected. The lack of known exploits lowers urgency but does not eliminate the need for vigilance.

European organizations should proactively monitor Oracle's security advisories for patches addressing CVE-2025-61755 and plan timely upgrades to fixed versions once available. Until patches are released, network segmentation and strict access controls should be enforced to limit exposure of Oracle GraalVM services to untrusted networks. Employing firewall rules to restrict inbound traffic to trusted hosts and protocols can reduce attack surface. Additionally, organizations should audit their use of GraalVM for JDK to identify and isolate instances running affected versions. Implementing network intrusion detection systems tuned to detect anomalous access patterns to GraalVM services may provide early warning. Finally, integrating this vulnerability into vulnerability management and risk assessment workflows ensures ongoing awareness and prioritization.