JITServer: Multiple Denial of Service vulnerabilities via out-of-bounds heap reads during message and reply parsing

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-110938
StatePUBLISHED
Assignereclipse
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-21 09:17:06 UTC
Updated2026-10-21 09:17:06 UTC
DescriptionIn Eclipse OpenJ9 versions up to 0.63.0, the JITServer component is vulnerable to denial of service due to improper boundary checks during protocol message and reply handling. An unauthenticated remote attacker or malicious JITServer can transmit malformed network payloads that cause out-of-bounds heap reads, immediately crashing the JITServer daemon or client JVM process via a segmentation fault (SIGSEGV).

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from [email protected]

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

Problem Types: CWE-20 | CWE-125 | CWE-125 CWE-125 | CWE-20 CWE-20

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.7HIGHCVSS: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/C...
4.0CNACVSS8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Eclipse Foundation Eclipse OpenJ9 affected 0.8.0 0.63 semver Not specified

References

ReferenceSourceLinkTags
gitlab.eclipse.org/security/cve-assignment/-/work_items/407 [email protected] gitlab.eclipse.org
github.com/eclipse-openj9/openj9/pull/25011 [email protected] github.com
gitlab.eclipse.org/security/vulnerability-reports/-/work_items/944 [email protected] gitlab.eclipse.org
gitlab.eclipse.org/security/vulnerability-reports/-/work_items/943 [email protected] gitlab.eclipse.org
gitlab.eclipse.org/security/vulnerability-reports/-/work_items/946 [email protected] gitlab.eclipse.org
gitlab.eclipse.org/security/vulnerability-reports/-/work_items/947 [email protected] gitlab.eclipse.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Duc Anh Nguyen (VinSOC) — [email protected] (en)

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