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Oracle Critical Patch Update April 2026

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

421 CVEs in this release, one square each

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Share this chart Oracle Critical Patch Update April 2026, one square per CVE: 172 Java CVEs, 16 protected by Waratek, 8 exploited, 249 other CVEs in this release.

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By status

16Protected by Waratek4Mitigation candidate152No exploit published10Outside Waratek scope239Not applicable 8Exploited, marked by the ring

No exploit published. For 51 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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Including CVEs outside Waratek scope✕Has a public PoC✕
Overview 5 matches · 1 in Waratek scope · 0 protected · 2 exploited · 0 CISA KEV · 3 EPSS ≥ 0.5
5matches 1in Waratek scope20.0% 0protected0.0% 2exploited40.0% 0CISA KEV0.0% 3EPSS ≥ 0.560.0%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 1 20.0% No exploit published 0 0.0% Outside Waratek scope 0 0.0% Not applicable 4 80.0% Withdrawn CVE 0 0.0%
Critical 0 0.0% High 5 100.0% Medium 0 0.0% 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 5 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 2 40.0% Working exploit published 2 40.0% Proof of concept only 1 20.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 2 / month
Not applicable: 4Mitigation candidate: 1 High: 5 not blocked: 5 Proof of concept only: 1Working exploit published: 2Exploited: 2
Jul 241 Not applicable1 High1 not blocked1 Exploited1 Aug 240 Sep 240 Oct 240 Nov 240 Dec 240 Jan 250 Feb 250 Mar 250 Apr 250 May 250 Jun 251 Mitigation candidate1 High1 not blocked1 Exploited1 Jul 252 Not applicable2 High2 not blocked2 Working exploit published2 Aug 250 Sep 250 Oct 250 Nov 251 Not applicable1 High1 not blocked1 Proof of concept only1
Jul 24Sep 24Nov 24Jan 25Mar 25May 25Jul 25Sep 25Nov 25
5 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-2025-65018 High 2025-11-25 Not applicable Proof of concept only LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, there is a heap buffer overflow vulnerability in the libpng simplified API function png_image_finish_read when processing 16-bit interlaced PNGs with 8-bit output format. Attacker-crafted interlaced PNG files cause heap writes beyond allocated buffer bounds. This issue has been patched in version 1.6.51.
CVE-2025-27210 High 2025-07-18 Not applicable Working exploit published An incomplete fix has been identified for CVE-2025-23084 in Node.js, specifically affecting Windows device names like CON, PRN, and AUX. This vulnerability affects Windows users of `path.join` API.
CVE-2025-6965 High 2025-07-15 Not applicable Working exploit published There exists a vulnerability in SQLite versions before 3.50.2 where the number of aggregate terms could exceed the number of columns available. This could lead to a memory corruption issue. We recommend upgrading to version 3.50.2 or above.
CVE-2025-27817 High 2025-06-10 Mitigation candidate Exploited A possible arbitrary file read and SSRF vulnerability has been identified in Apache Kafka Client. Apache Kafka Clients accept configuration data for setting the SASL/OAUTHBEARER connection with the brokers, including "sasl.oauthbearer.token.endpoint.url" and "sasl.oauthbearer.jwks.endpoint.url". Apache Kafka allows clients to read an arbitrary file and return the content in the error log, or sending requests to an unintended location. In applications where Apache Kafka Clients configurations can be specified by an untrusted party, attackers may use the "sasl.oauthbearer.token.endpoint.url" and "sasl.oauthbearer.jwks.endpoint.url" configuratin to read arbitrary contents of the disk and environment variables or make requests to an unintended location. In particular, this flaw may be used in Apache Kafka Connect to escalate from REST API access to filesystem/environment/URL access, which may be undesirable in certain environments, including SaaS products. Since Apache Kafka 3.9.1/4.0.0, we have added a system property ("-Dorg.apache.kafka.sasl.oauthbearer.allowed.urls") to set the allowed urls in SASL JAAS configuration. In 3.9.1, it accepts all urls by default for backward compatibility. However in 4.0.0 and newer, the default value is empty list and users have to set the allowed urls explicitly.
CVE-2024-6387 High 2024-07-01 Not applicable Exploited A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.