Heap-based Buffer Overflow in Oracle Java SE

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Oracle

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: ImageIO). Supported versions that are affected are Oracle Java SE: 8u491, 8u491-perf, 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1; Oracle GraalVM for JDK: 17.0.19 and 21.0.11; Oracle GraalVM Enterprise Edition: 21.3.18. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition 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 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).

CVSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-21

Generated

2026-07-22

AI Q&A

2026-07-22

EPSS Evaluated

N/A

NVD

CVE-2026-47010

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	java_se	8u491
oracle	java_se	8u491-perf
oracle	java_se	11.0.31
oracle	java_se	17.0.19
oracle	java_se	21.0.11
oracle	java_se	25.0.3
oracle	java_se	26.0.1
oracle	graalvm_for_jdk	17.0.19
oracle	graalvm_for_jdk	21.0.11
oracle	graalvm_enterprise_edition	21.3.18

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition related to the ImageIO component. It allows an unauthenticated attacker with network access to potentially modify data in the affected products through multiple protocols. The attack complexity is high, and user interaction is not required.

Impact Analysis

If exploited, this vulnerability could allow an attacker to modify some data in Oracle Java SE or GraalVM products. This could affect applications relying on these components, especially those processing untrusted data or running in sandboxed environments like Java Web Start or applets.

Mitigation Strategies

Apply the latest security patches from Oracle for affected Java SE, GraalVM for JDK, or GraalVM Enterprise Edition versions. Update to versions 8u501, 11.0.32, 17.0.20, 21.0.12, 25.0.4, or 26.0.2 as applicable. Disable Java Web Start and Java applets if not required. Restrict network access to Java applications handling untrusted code.

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