CVE-2026-111075CWE-125CWE-191

CVE-2026-111075

published October 21, 2026

CVSS
8.7
EPSS
0%
Percentile
29.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
8.7 · NONE
CVSS v4.0
8.7 · 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
EPSS
0.00372 · 29.9th percentile
Weaknesses
CWE-125 · Out-of-bounds Read; CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-10-21T12:16Z
References (3)
https://github.com/eclipse-openj9/openj9/pull/25009 · [email protected]https://gitlab.eclipse.org/security/cve-assignment/-/work_items/423 · [email protected]https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/941 · [email protected]
EPSS history
Timeline
  • 22 OCT 03:29Z
    EPSS moved — → 0%
    epss
  • 21 OCT 08:00Z
    JITServer: Pre-authentication remote crash via integer underflow and out-of-bounds heap read in DataDescriptor deserialization
    cvelistv5
  • 21 OCT 08:00Z
    JITServer: Pre-authentication remote crash via integer underflow and out-of-bounds heap read in DataDescriptor deserialization
    cvelistv5