CVE-2026-46917

Analyzed Analyzed - Analysis Complete

Denial of Service in Oracle Java SE

Publication date: 2026-07-21

Last updated on: 2026-08-03

Assigner: Oracle

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 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. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-21

Last Modified

2026-08-03

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-46917

EUVD

EUVD-2026-46459

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	graalvm	21.3.18
oracle	graalvm_for_jdk	17.0.19
oracle	graalvm_for_jdk	21.0.11
oracle	jre	11.0.31
oracle	jre	17.0.19
oracle	jre	21.0.11
oracle	jre	25.0.3
oracle	jre	26.0.1
oracle	jdk	11.0.31
oracle	jdk	17.0.19
oracle	jdk	21.0.11
oracle	jdk	25.0.3
oracle	jdk	26.0.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition. It allows an unauthenticated attacker to cause a partial denial of service (DOS) by sending malicious data via TLS to the affected components. The vulnerability does not require user interaction or authentication to exploit.

Detection Guidance

Detection involves checking the installed versions of Oracle Java SE, GraalVM for JDK, or GraalVM Enterprise Edition against the affected versions (11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1, etc.). Use commands like 'java -version' or 'gu -version' to verify versions.

Impact Analysis

The impact is limited to partial denial of service, meaning the affected Java applications may become unavailable or slow down. It does not lead to data breaches or unauthorized access to sensitive information.

Compliance Impact

This vulnerability causes a partial denial of service (DOS) in affected Java SE and GraalVM products. While it does not directly impact data confidentiality or integrity, a DOS condition could disrupt services handling sensitive data, potentially violating availability requirements in GDPR, HIPAA, and other regulations that mandate timely access to personal or health information.

Mitigation Strategies

Apply the latest patches or updates from Oracle to upgrade to a non-vulnerable version. Disable TLS services if not required or restrict network access to them until patched.

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