CVE-2026-111075

UNKNOWN 0.0

JITServer: Pre-authentication remote crash via integer underflow and out-of-bounds heap read in DataDescriptor deserialization

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-191 CWE-125
Vendor	eclipse foundation
Product	eclipse openj9
Published	Oct 21, 2026

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Affected Versions

Eclipse Foundation / Eclipse OpenJ9

0.8.0 < 0.63

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/eclipse-openj9/openj9/pull/25009 gitlab.eclipse.org: https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/941 gitlab.eclipse.org: https://gitlab.eclipse.org/security/cve-assignment/-/work_items/423

Credits

Duc Anh Nguyen (VinSOC) — `@gladiator9797` — [email protected]