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CVE-2026-6918

Quick assessment

Affected
Eclipse Foundation Eclipse OpenJ9
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Eclipse OpenJ9是Eclipse基金会的一款Java应用程序引擎。该产品主要用于运行Java应用程序。 Eclipse OpenJ9 0.21至0.58版本存在缓冲区错误漏洞，该漏洞源于预认证远程攻击者可通过发送32字节特制TCP消息导致JITServer崩溃。

AI Predicted 7.5 Difficulty: Easy EPSS 1.18% · P67

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Eclipse Foundation Eclipse OpenJ9 0.21< 0.59 affected
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I. Basic Information for CVE-2026-6918

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Eclipse Open9J versions 0.21 to 0.58, a pre-authentication remote attacker can crash JITServer by sending a 32-byte crafted TCP message.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Eclipse OpenJ9 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eclipse OpenJ9是Eclipse基金会的一款Java应用程序引擎。该产品主要用于运行Java应用程序。 Eclipse OpenJ9 0.21至0.58版本存在缓冲区错误漏洞，该漏洞源于预认证远程攻击者可通过发送32字节特制TCP消息导致JITServer崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation Eclipse OpenJ9 0.21 ~ 0.59 -

II. Public POCs for CVE-2026-6918

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III. Intelligence Information for CVE-2026-6918

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Patches & Fixes for CVE-2026-6918 (1)

Vendor Advisories for CVE-2026-6918 (1)

Same Patch Batch · Eclipse Foundation · 2026-05-05 · 3 CVEs total

CVE-2026-7411 10.0 CRITICAL Eclipse BaSyx Java Server SDK 路径遍历漏洞
CVE-2026-7412 8.6 HIGH Eclipse BaSyx Java Server SDK 代码问题漏洞

IV. Related Vulnerabilities

Same product: Eclipse OpenJ9
Same vendor: Eclipse Foundation
Same weakness: CWE-125

V. Comments for CVE-2026-6918

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