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Java CVE-2026-83368

| EUVDEUVD-2026-80054 HIGH
Improper Access Control (CWE-284)
2026-09-15 secalert_us@oracle.com GHSA-7hqr-jpxp-whq8
7.0
CVSS 3.1 · Vendor: oracle
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

Oracle GraalVM (including GraalVM for JDK 17/21, GraalVM Enterprise Edition and GraalVM 25.x) contains a flaw in its Compiler component that a network-positioned attacker can reach over HTTP without authenticating. Successful exploitation can expose critical data, allow limited unauthorized modification of data, and cause a partial denial of service; Oracle characterizes the issue as difficult to exploit per the AC:H metric, implying attacker-controlled timing or memory-layout preconditions. No public exploit code has been identified at time of analysis, and the issue is not listed in CISA KEV; the CVSS 3.1 base score is 7.0 with a high confidentiality impact.

Affected VersionsENISA

Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM Oracle GraalVM:25.0.4.1
Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM Oracle GraalVM Enterprise Edition:21.3.19.1
Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM Oracle GraalVM for JDK 21:23.1.12.1
Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM Oracle GraalVM for JDK 17:23.0.13.1

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 7.0 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

Primary rating from Vendor (oracle) · only source for this CVE.

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low

DescriptionCVE.org

Vulnerability in the Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM product of Oracle Java SE (component: Compiler). The supported version that is affected is Oracle GraalVM for JDK 17: 23.0.13.1; Oracle GraalVM for JDK 21: 23.1.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1; Oracle GraalVM: 25.0.4.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM accessible data as well as unauthorized update, insert or delete access to some of Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM. CVSS 3.1 Base Score 7.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L).

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

35
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +35
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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