CVE-2026-47058: High severity Oracle Java SE (Scripting) vulnerability
1) DataView getter/setter methods use absolute ByteBuffer indexing and ignore the offset, allowing read and write to memory outside its intended window. 2) Missing bounds check in the DataView constructor fails to validate the capacity.
Other sources
Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Java SE accessible data as well as unauthorized access to critical data or complete access to all Java SE accessible data.
— IBM
Vulnerability in Oracle Java SE (component: Scripting). Supported versions that are affected are Oracle Java SE: 8u491, 8u491-perf and 11.0.31. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE accessible data as well as unauthorized access to critical data or complete access to all Oracle Java SE accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
— NVD
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Oracle Java SEto a version that resolves this vulnerability.Fixed in 8u491 - Upgrade
Upgrade
Oracle Java SEto a version that resolves this vulnerability.Fixed in 8u491-perf - Upgrade
Upgrade
Oracle Java SEto a version that resolves this vulnerability.Fixed in 11.0.31 - Compensating control
Because this vulnerability is reachable over the network (unauthenticated attacker with network access via multiple protocols) and may be exploitable through APIs (e.g., a web service supplying data to the APIs in the affected Component: Scripting), restrict network access to the exposed Java services/APIs to only trusted clients (e.g., via firewall/ACL allowlists).
Event History
Frequently Asked Questions
What is the severity of CVE-2026-47058?
The severity of CVE-2026-47058 is rated as high with a score of 7.4.
How do I fix CVE-2026-47058?
To fix CVE-2026-47058, ensure you update to the latest versions of Oracle JRE, Oracle JDK, and IBM WebSphere Application Server.
What impact does CVE-2026-47058 have on my system?
CVE-2026-47058 can potentially allow unauthorized memory access, leading to data corruption or leakage.
Which software is affected by CVE-2026-47058?
CVE-2026-47058 affects Oracle JRE, Oracle JDK, IBM WebSphere Application Server, and Oracle Java SE.
Is CVE-2026-47058 easy to exploit?
CVE-2026-47058 is considered difficult to exploit but poses serious risks if successfully targeted.