CVE-2026-6918

Eclipse Open9J: Eclipse Open9J: Denial of Service in JITServer via crafted TCP message

Published May 5, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Pre‑authentication Remote Crash of JITServer in Eclipse OpenJ9 Eclipse Open9J: Eclipse Open9J: Denial of Service in JITServer via crafted TCP message
Weaknesses CWE-1286
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
CPEs cpe:2.3:a:eclipse:openj9:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse openj9
Vendors & Products Eclipse
Eclipse openj9
Type Values Removed Values Added
Title Pre‑authentication Remote Crash of JITServer in Eclipse OpenJ9
Type Values Removed Values Added
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.
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 8.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
eclipse
Published
Updated
Jul 15, 2026, 12:40 AM
Reserved
Apr 23, 2026, 4:00 PM
Status
Modified
Published
May 5, 2026, 1:16 PM
Modified
Oct 26, 2026, 7:10 PM
Severity
Important
Public date
May 5, 2026, 12:29 PM