CVE-2026-87420 Oracle Service Bus - Remote Code Execution

Oracle Service Bus 14.1.2.0.0 contains a remote code execution caused by an easily exploitable vulnerability in the core component, letting low privileged attackers with network access via HTTP takeover the system, exploit requires low privileges and network access.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
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Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
20 October 2026
Updated
21 October 2026

Vendor fix

Update to the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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