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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

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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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By status

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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Columns
EPSS ≥ 0.5✕
Overview 2 matches · 0 protected · 0 exploited · 0 CISA KEV · 1 public PoC
2matches 0protected0.0% 0exploited0.0% 0CISA KEV0.0% 1public PoC50.0%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 1 50.0% No exploit published 1 50.0%
Critical 0 0.0% High 0 0.0% Medium 2 100.0% 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 2 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 1 50.0% Proof of concept only 0 0.0% Forecast only 1 50.0% No public exploit 0 0.0%
split by peak 1 / quarter
No exploit published: 1Mitigation candidate: 1 Medium: 2 not blocked: 2 Forecast only: 1Working exploit published: 1
Q2 191 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 Q3 190 Q4 190 Q1 200 Q2 200 Q3 200 Q4 200 Q1 211 No exploit published1 Medium1 not blocked1 Forecast only1
Q2 19Q3 19Q4 19Q1 20Q2 20Q3 20Q4 20Q1 21
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-2020-27223 Medium 2021-02-26 No exploit published Forecast only In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.
CVE-2019-0221 Medium 2019-05-28 Mitigation candidate Working exploit published The SSI printenv command in Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website.