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Oracle Critical Patch Update April 2021

Released April 2021 · Oracle's advisory ↗ · ← Critical Patch Update, January 2021 · Critical Patch Update, July 2021 →

258 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 WaratekProtected by WaratekProtected by WaratekProtected by WaratekProtected by WaratekMitigation candidate, exploitedMitigation candidateMitigation 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 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 scope, exploitedOutside Waratek scope, exploitedOutside Waratek scope, exploitedOutside 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 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 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 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 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 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 April 2021, one square per CVE: 137 Java CVEs, 19 protected by Waratek, 7 exploited, 121 other CVEs in this release.

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19Protected by Waratek3Mitigation candidate115No exploit published67Outside Waratek scope54Not applicable 7Exploited, marked by the ring

No exploit published. For 97 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✕
Overview 1 match · 0 in Waratek scope · 0 protected · 0 exploited · 0 CISA KEV · 0 public PoC
1match 0in Waratek scope0.0% 0protected0.0% 0exploited0.0% 0CISA KEV0.0% 0public PoC0.0%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0% Outside Waratek scope 0 0.0% Not applicable 1 100.0% Withdrawn CVE 0 0.0%
Critical 0 0.0% High 1 100.0% 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 1 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 0 0.0% Proof of concept only 0 0.0% Forecast only 1 100.0% No public exploit 0 0.0%
split by peak 1 / month
Not applicable: 1 High: 1 not blocked: 1 Forecast only: 1
Mar 211 Not applicable1 High1 not blocked1 Forecast only1
Mar 21
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-2021-22883 High 2021-03-03 Not applicable Forecast only Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is configured, then this lead to an excessive memory usage and cause the system to run out of memory.