{"id":"CVE-2026-111075","state":"PUBLISHED","title":"JITServer: Pre-authentication remote crash via integer underflow and out-of-bounds heap read in DataDescriptor deserialization","description":"In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component fails to perform cross-field validation on attacker-controlled `_size`, `_paddingSize`, and `_dataOffset` fields during `DataDescriptor` message deserialization. An unauthenticated remote attacker can send a crafted network payload that triggers an unsigned integer underflow in `DataDescriptor::getPayloadSize()` and `DataDescriptor::getNextDescriptor()`. This results in an out-of-bounds heap read and an immediate process crash (SIGSEGV), causing a denial of service.","publishedAt":"2026-10-21T08:00:32.804Z","updatedAt":"2026-10-26T17:57:34.946Z","severity":{"score":8.7,"label":"High","version":"4.0","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","source":"eclipse"},"assigner":"eclipse","products":["Eclipse Foundation Eclipse OpenJ9"],"affected":[{"vendor":"Eclipse Foundation","product":"Eclipse OpenJ9","defaultStatus":"unaffected","versions":[{"version":"0.8.0","status":"affected","lessThan":"0.63","versionType":"semver"}]}],"references":["https://github.com/eclipse-openj9/openj9/pull/25009","https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/941","https://gitlab.eclipse.org/security/cve-assignment/-/work_items/423"],"weaknesses":["CWE-191","CWE-125"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/111xxx/CVE-2026-111075.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111075","state":"PUBLISHED","datePublished":"2026-10-21T08:00:32.804Z","dateUpdated":"2026-10-26T17:57:34.946Z","assignerShortName":"eclipse","assignerOrgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","dateReserved":"2026-10-15T13:55:41.439Z"},"containers":{"cna":{"title":"JITServer: Pre-authentication remote crash via integer underflow and out-of-bounds heap read in DataDescriptor deserialization","descriptions":[{"lang":"en","value":"In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component fails to perform cross-field validation on attacker-controlled `_size`, `_paddingSize`, and `_dataOffset` fields during `DataDescriptor` message deserialization. An unauthenticated remote attacker can send a crafted network payload that triggers an unsigned integer underflow in `DataDescriptor::getPayloadSize()` and `DataDescriptor::getNextDescriptor()`. This results in an out-of-bounds heap read and an immediate process crash (SIGSEGV), causing a denial of service."}],"affected":[{"vendor":"Eclipse Foundation","product":"Eclipse OpenJ9","defaultStatus":"unaffected","versions":[{"version":"0.8.0","status":"affected","lessThan":"0.63","versionType":"semver"}]}],"references":[{"url":"https://github.com/eclipse-openj9/openj9/pull/25009"},{"url":"https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/941"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/423"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":8.7,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-191","lang":"en","description":"CWE-191","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125","type":"CWE"}]}],"providerMetadata":{"shortName":"eclipse","orgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","dateUpdated":"2026-10-21T08:00:32.804Z"},"impacts":[{"capecId":"CAPEC-128","descriptions":[{"lang":"en","value":"CAPEC-128"}]},{"capecId":"CAPEC-540","descriptions":[{"lang":"en","value":"CAPEC-540"}]}],"credits":[{"lang":"en","value":"Duc Anh Nguyen (VinSOC) — `@gladiator9797` — mra9797@gmail.com","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-111075","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-26T17:36:22.293263Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-26T17:57:34.946Z"}}]}}}