CVE-2026-110938 Eclipse OpenJ9 - Denial of Service

Eclipse OpenJ9 <= 0.63.0 contains a denial of service caused by improper boundary checks in JITServer protocol message handling, letting unauthenticated remote attackers crash the JITServer daemon or client JVM via malformed payloads.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.41% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
21 October 2026
Updated
22 October 2026
Weakness
CWE-20

Vendor fix

Update to a version later than 0.63.0 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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