CVE-2026-110938

In 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).

CVSS 4.0

8.7CVSS: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

0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-25)

CWEs

CWE-20, CWE-125

Published

2026-10-21

Modified

2026-10-22

Record from

the NVD, synced 2026-10-23

References

• https://github.com/eclipse-openj9/openj9/pull/25011
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/407
• https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/943
• https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/944
• https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/946

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