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Oracle Critical Security Patch Update September 2026

Released September 2026 · Oracle's advisory ↗ · ← Security Patch Update, August 2026 · Critical Patch Update, October 2026 →

806 CVEs in this release, one square each

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Share this chart Oracle Critical Security Patch Update September 2026, one square per CVE: 639 Java CVEs, 6 protected by Waratek, 5 exploited, 167 other CVEs in this release.

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6Protected by Waratek633No exploit published1Outside Waratek scope166Not applicable 5Exploited, marked by the ring

No exploit published. For 596 of them, Oracle's security advisory is the source of public detail.

Protected by Waratek. Waratek RASP can block exploitation of these on systems that have not applied the patch yet.

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Has a public PoC✕
Overview 2 matches · 0 exploited · 0 CISA KEV · 0 EPSS ≥ 0.5
2matches 0exploited0.0% 0CISA KEV0.0% 0EPSS ≥ 0.50.0%
Protected by Waratek 2 100.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0%
Critical 1 50.0% High 0 0.0% Medium 1 50.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 2 100.0% partly blocked 0 0.0% not blocked 0 0.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 1 50.0% Proof of concept only 1 50.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 1 / month
Protected by Waratek: 2 Medium: 1Critical: 1 blocked by ARMR today: 2 Proof of concept only: 1Working exploit published: 1
May 261 Protected by Waratek1 Critical1 blocked by ARMR today1 Proof of concept only1 Jun 261 Protected by Waratek1 Medium1 blocked by ARMR today1 Working exploit published1
May 26Jun 26
2 matches Sign in to download these CVEs as CSV or JSON, or to follow them in a feed.
CVE Severity Published▾ Status Exploitation Description
CVE-2026-50229 Medium 2026-06-29 Protected by Waratek Working exploit published Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
CVE-2026-42779 Critical 2026-05-01 Protected by Waratek Proof of concept only The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class filter before calling Class.forName(). Affected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6. The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by applying the classname allowlist earlier. Affected are applications using Apache MINA that call IoBuffer.getObject(). Applications using Apache MINA are advised to upgrade.