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CVE-2025-21502VulnerabilityPublished Updated

Red Hat Security Advisory: java-17-openjdk security update for RHEL 8.6, 8.8, 8.10, 9.4 and 9.5

Affects Red Hat java-17-openjdkSource GCVE Database

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Not known to be exploited.

Data as of 3 Nov 2026, 02:32 UTC

Severity
Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Jan 2025

  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 2 Nov 2026.

What to do

AI-suggested

Red Hat has released an updated java-17-openjdk package that includes the security fix for CVE-2025-21502. Users should apply this update to affected Red Hat Enterprise Linux versions as soon as possible. Before applying this update, ensure all previously released errata relevant to the system have been applied. Refer to the official Red Hat advisory and update instructions at https://access.redhat.com/articles/11258 for detailed guidance.

Description

A security update for the java-17-openjdk packages in Red Hat Enterprise Linux addresses a vulnerability identified as CVE-2025-21502, which involves enhanced array handling in the JDK. This update also includes bug fixes related to configuration file transfers via the copy-jdk-configs package. The security impact is rated as moderate by Red Hat Product Security.

References

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