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CVE-2019-2821

Affected software2 products, listed below
Affected versionsJava SE: 11.0.3, 12.0.1
Severity5.3 Medium CVSS 3.0 2 scores
Fixed inOracle Critical Patch Update July 2019
Published23 Jul 2019
Updated17 Jun 2026

Description

Vulnerability in the Java SE component of Oracle Java SE (subcomponent: JSSE). Supported versions that are affected are Java SE: 11.0.3 and 12.0.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Java SE accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets (in Java SE 8), that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N).

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 7 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 2.0% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review automated Upstream data
  • Record active
Decided by Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed
Finding The Oracle Critical Patch Update July 2019 advisory says this vulnerability is reached only through untrusted code running in the Java sandbox, such as an applet or a Web Start application: "This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets (in Java SE 8), that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator)." A server JVM that runs only its own trusted code is not exposed, so there is nothing for the agent to protect.

CVSS

5.3 MEDIUM v3.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.0 5.3 MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N NVD Primary published
CVSS 2.0 2.6 none AV:N/AC:H/Au:N/C:P/I:N/A:N NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update July 2019 ↗ CPU 2019-Q3 Oracle Java SE / JSSE (Java SE: 11.0.3, 12.0.1)
Oracle's note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets (in Java SE 8), that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator).

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Java SE JSSE Java SE: 11.0.3, 12.0.1 11.0.3.0 · 12.0.1.0

Products and versions

2 products, 4 version entries
SourceVendorProductSchemeAffected versions
nvd oracle jdk javase 11.0.3 · 12.0.1
nvd oracle jre javase 11.0.3 · 12.0.1

References

URLTags
https://access.redhat.com/errata/RHSA-2019:1810 ADVISORY, RHSA-2019:1810
https://access.redhat.com/security/cve/CVE-2019-2821 REPORT, RHSA-2019:1810
https://access.redhat.com/errata/RHSA-2019:1817 ADVISORY, RHSA-2019:1817
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00038.html
http://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html Patch, Vendor Advisory
https://usn.ubuntu.com/4083-1/

Timeline

Published2019-07-23By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.