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Oracle Critical Patch Update January 2026

Released January 2026 · Oracle's advisory ↗ · ← Critical Patch Update, October 2025 · Critical Patch Update, April 2026 →

219 CVEs in this release, one square each

Protected by Waratek, exploitedProtected by Waratek, exploitedProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekMitigation candidate, exploitedMitigation candidateNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeOutside Waratek scopeNot applicable, exploitedNot applicable, exploitedNot applicable, exploitedNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicable
Share this chart Oracle Critical Patch Update January 2026, one square per CVE: 75 Java CVEs, 15 protected by Waratek, 6 exploited, 144 other CVEs in this release.

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15Protected by Waratek2Mitigation candidate58No exploit published14Outside Waratek scope130Not applicable 6Exploited, marked by the ring

No exploit published. For 26 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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Overview 1 match · 0 protected · 0 exploited · 0 CISA KEV · 0 EPSS ≥ 0.5
1match 0protected0.0% 0exploited0.0% 0CISA KEV0.0% 0EPSS ≥ 0.50.0%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 1 100.0% No exploit published 0 0.0%
Critical 0 0.0% High 0 0.0% Medium 1 100.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 0 0.0% partly blocked 0 0.0% not blocked 1 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 1 100.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 1 / month
Mitigation candidate: 1 Medium: 1 not blocked: 1 Working exploit published: 1
May 251 Mitigation candidate1 Medium1 not blocked1 Working exploit published1
May 25
1 match Sign in to download these CVEs as CSV or JSON, or to follow them in a feed.
CVE Severity Published▾ Status Exploitation Description
CVE-2025-27533 Medium 2025-05-07 Mitigation candidate Working exploit published Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ. During unmarshalling of OpenWire commands the size value of buffers was not properly validated which could lead to excessive memory allocation and be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on the availability of the ActiveMQ broker when not using mutual TLS connections. This issue affects Apache ActiveMQ: from 6.0.0 before 6.1.6, from 5.18.0 before 5.18.7, from 5.17.0 before 5.17.7, before 5.16.8. ActiveMQ 5.19.0 is not affected. Users are recommended to upgrade to version 6.1.6+, 5.19.0+, 5.18.7+, 5.17.7, or 5.16.8 or which fixes the issue. Existing users may implement mutual TLS to mitigate the risk on affected brokers.