CVE-2026-6918
High
Description
In Eclipse Open9J versions 0.21 to 0.58, a pre-authentication remote attacker can crash JITServer by sending a 32-byte crafted TCP message.
SeverityHigh
CVSS7.5
Exploit probability—
ProductEclipse Openj9
PublishedMay 5, 2026
First seenMay 5, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- eclipse openj90.59.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| eclipse openj9 | 0.21.0 ≤ v < 0.59.0 | 0.59.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.