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Oracle Releases October 2026 Critical Patch Update Fixing 1,295 Vulnerabilities Across Multiple Products

Oracle has published its quarterly Critical Patch Update (CPU) on October 20, 2026, delivering a total of 1,295 security patches for a wide range of products. After removing duplicates, the update addresses 1,209 unique CVEs. The highest number of fixes went to Oracle Fusion Middleware with 206 patches, followed by Oracle E-Business Suite with 194, Oracle Communications with 110, Oracle MySQL with 98, and Oracle Java SE with 55. Among the vulnerabilities, 587 received a CVSSv3 base score of 7.0 or higher, including 112 rated 9.0 or above. Six vulnerabilities scored the maximum 10.0, one of which is CVE-2026-101809 in Oracle E-Business Suite Workflow Notification Mailer that can be exploited remotely without authentication over HTTP.

Security NEXTTranslated from Japanese

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Oracle has released its quarterly Critical Patch Update (CPU) for October 2026, addressing a total of 1,295 security vulnerabilities across its product portfolio.

The update, published on October 20, 2026, covers multiple product families. After accounting for overlaps, it resolves 1,209 unique CVEs. The largest share of fixes targets Oracle Fusion Middleware (206 patches), followed by Oracle E-Business Suite (194), Oracle Communications (110), Oracle MySQL (98), and Oracle Java SE (55).

Analysis of CVSSv3 base scores shows that 587 vulnerabilities received a score of 7.0 or higher. Of these, 112 were rated 9.0 or above. Six vulnerabilities achieved the maximum score of 10.0.

One critical example is CVE-2026-101809 in the Oracle E-Business Suite Workflow Notification Mailer component. This flaw allows unauthenticated remote exploitation via HTTP and carries a CVSS base score of 10.0.

The October 2026 CPU continues Oracle’s regular schedule of coordinated security updates, enabling customers to apply fixes across enterprise middleware, business applications, databases, and development platforms in a single release cycle.

Oracle Java SEOracle MySQLOracleOracle Fusion MiddlewareOracle E-Business SuiteCVE-2026-101809
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