CVE-2026-111075 In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component fails to perform cross-field validation on attacker-controlled `_size`,
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-111075?
CVE-2026-111075 is a high-severity vulnerability in Eclipse OpenJ9, published on 21 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-111075?
How do I fix CVE-2026-111075?
No fix has been published for CVE-2026-111075 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111075 being exploited?
There is no known exploitation of CVE-2026-111075 in the wild and no public exploit code.
Sources
Also known as GHSA-9wq7-cgfv-cwx8.