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2-minute read Oct 20 2026

Oracle October 2026 Critical Patch Update Addresses 1209 CVEs

Research Special Operations
By Research Special Operations
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A blog title graphic by Tenable Research Special Operations set against a dark charcoal background. It features a white database icon in the center above the text “Oracle Critical Patch Update” with the date “October 20, 2026 (Q4)” written at the bottom.

Oracle addresses 1209 CVEs in its final quarterly update of 2026 with 1295 patches, including 112 critical updates.

Key Takeaways

  1. The October 2026 Critical Patch Update (CPU) contains fixes for 1209 unique CVEs in 1295 security updates
  2. 112 issues (8.6% of all patches) were assigned a critical severity rating
  3. Oracle Fusion Middleware received the highest number of patches at 206, accounting for 15.9% of all patches

Background

On October 20, Oracle released its Critical Patch Update (CPU) for October 2026, the final quarterly update of the year. This CPU contains fixes for 1209 unique CVEs in 1295 security updates across 33 Oracle product families. Out of the 1295 security updates published this quarter, 8.6% of patches were assigned a critical severity. Medium severity patches accounted for the bulk of security patches at 47.3%, followed by high severity patches at 36.7%.

A stacked bar chart showing the severity distribution across the 1,295 security patches in the October 2026 Oracle Critical Patch Update: Critical 112 (8.6%), High 475 (36.7%), Medium 613 (47.3%), Low 95 (7.3%).

This quarter's update includes 112 critical patches across 95 CVEs.

SeverityIssues PatchedCVEs
Critical11295
High475439
Medium613582
Low9593
Total12951209

Analysis

This quarter, the Oracle Fusion Middleware product family contained the highest number of patches at 206, accounting for 15.9% of the total patches, followed by Oracle E-Business Suite at 194 patches, which accounted for 15% of the total patches.

A full breakdown of the patches for this CPU can be seen in the following table, which also includes a count of vulnerabilities that can be exploited over a network without authentication.

Oracle Product FamilyNumber of PatchesRemote Exploit without Auth
Oracle Fusion Middleware206134
Oracle E-Business Suite19431
Oracle Siebel CRM12266
Oracle Communications11077
Oracle PeopleSoft10941
Oracle JD Edwards10244
Oracle MySQL9829
Oracle Java SE5549
Oracle Supply Chain5019
Oracle Essbase3814
Oracle REST Data Services3511
Oracle Analytics3314
Oracle Systems289
Oracle Database Server144
Oracle Construction and Engineering137
Oracle Enterprise Manager122
Oracle GoldenGate113
Oracle Trusted Answer Search81
Oracle Utilities Applications87
Oracle Secure Backup63
Oracle Virtualization60
Oracle Autonomous Health Framework51
Oracle Financial Services Applications55
Oracle Retail Applications55
Oracle TimesTen In-Memory Database40
Oracle HealthCare Applications44
Oracle Hospitality Applications44
Oracle Commerce32
Oracle APEX22
Oracle Application Testing Suite20
Oracle Global Lifecycle Management10
Oracle NoSQL Database11
Oracle SQL Developer11

Solution

Customers are advised to apply all relevant patches in this CPU. Please refer to the October 2026 advisory for full details.

Identifying affected systems

A list of Tenable plugins to identify these vulnerabilities will appear here as they're released. This link uses a search filter to ensure that all matching plugin coverage will appear as it is released.

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Join Tenable's Research Special Operations (RSO) Team on Tenable Connect for further discussions on the latest cyber threats.

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Research Special Operations

Research Special Operations

The Research Special Operations (RSO) team serves as Tenable’s Forward Logistics Element in the threat landscape, providing customers with the analyses and contextualized exposure intelligence required to manage risks to critical business assets. With over 150 years of collective expertise, this han...

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