Skip to main content
CVE-2026-83374VulnerabilityPublished

Red Hat Security Advisory: java-21-openjdk security update for RHEL 8 and 9

Affects Red Hat java-21-openjdkSource GCVE Database

0
Compare

Mentioned vulnerabilities

Authoritative record:CVE-2026-83374· Medium 5.9

Not known to be exploited · CVSS 5.9 Medium.

Data as of 30 Oct 2026, 09:50 UTC

CVSS 3.1 base score
5.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (oracle)CVSS 3.15.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Oracle CorporationOracle Java SEAffected
  • 8u503 – 27
7 affected builds
Fixed in–
Oracle CorporationOracle GraalVM for JDKAffected
  • =17.0.20.1
  • =21.0.12.1
Fixed in–
Oracle CorporationOracle GraalVM Enterprise EditionAffected
  • =21.3.19.1.1
Fixed in–
Mavencom.oracle.java/java-sepkg:maven/com.oracle.java/java-seOther threatsAffected
  • 8u503 – 27
8 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released an official security update for java-21-openjdk packages on Red Hat Enterprise Linux 8 and 9. Users should apply this update promptly to remediate the listed vulnerabilities. Before applying this update, ensure all previously released errata relevant to your system have been applied. For detailed update instructions, refer to Red Hat's official documentation at https://access.redhat.com/articles/11258. Additionally, update the ca-certificates package to address related certificate store vulnerabilities.

Description

Red Hat has released a security update for the java-21-openjdk packages in Red Hat Enterprise Linux 8 and 9. This update addresses multiple security vulnerabilities across various components of the OpenJDK 21 Java Runtime Environment and Software Development Kit, including enhancements to PKCS5 padding, TLS certificate handling, LDAP logins, SASL authentication, HTTP client and server handling, XML processing, and more. The update is rated as Important by Red Hat Product Security. Users should apply this update to mitigate the addressed vulnerabilities.

References

Community reviews

Loading reviews…