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Oracle Critical Security Patch Update, September 2026 Review

Oracle's September 2026 Critical Patch Update fixes 673 vulnerabilities, including 104 critical, with many remotely exploitable in E-Business Suite and Fusion Middleware.

Oracle released 673 security patches in its September 2026 Critical Patch Update: 104 rated critical, 503 high, and 59 medium. Oracle E-Business Suite received the most patches (159, 24% of total), with 19 exploitable without credentials including CVE-2026-83327, CVE-2026-83452, and CVE-2026-83462 at CVSS 9.8. Fusion Middleware received 153 patches with 78 remotely exploitable without authentication, and 41 patches address third-party open-source component flaws. Qualys published detection QIDs for vulnerable assets.

Qualys ThreatPROTECT · 1h agoAdvisoryCVE-2026-83154CVE-2026-83196CVE-2026-83197+10 CVEs

Oracle security advisory – January 2026 quarterly rollup (AV26-042) – Update 2

CISA added actively exploited Oracle flaw CVE-2026-21962 to the KEV catalog; it allows remote unauthorized access to Oracle HTTP Server and WebLogic Proxy Plug-in.

Canada's Cyber Centre updated advisory AV26-042 on Oracle's January 2026 quarterly rollup, reporting that CISA added CVE-2026-21962 to the Known Exploited Vulnerabilities catalog on August 24, 2026. The flaw affects the Oracle HTTP Server and Oracle WebLogic Server Proxy Plug-in in Oracle Fusion Middleware and may allow a remote attacker to obtain unauthorized access. A public proof of concept has been available since January 21, 2026, and fixes shipped in Oracle's January 20, 2026 advisory covering multiple products.

Canadian Centre for Cyber Security · 22d agoExploit / PoC in the wildCVE-2026-21962

Oracle Critical Security Update – 673 Vulnerabilities Patched Across Product Families

Oracle's September 2026 Critical Patch Update ships 673 patches across 17 product families, including 100+ critical and 240+ remotely exploitable flaws.

Oracle's September 2026 Critical Security Patch Update ships 673 patches covering 672 unique CVEs, with more than 130 additional CVEs resolved through bundled fixes, pushing the effective total past 800. Over 100 flaws are critical severity and more than 240 are remotely exploitable without authentication. Oracle E-Business Suite received 159 fixes, Fusion Middleware 153 (78 unauthenticated and network-exploitable), and Hyperion 102. No in-the-wild exploitation of these specific flaws is reported, but Oracle cites CISA's earlier 72-hour remediation order for actively exploited CVE-2026-21962 (CVSS 10.0).

Cyber Security News · 2h agoAdvisory 2 sourcesCVE-2026-21962