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CVE-2025-21587VulnerabilityPublished Updated

Red Hat Security Advisory: OpenJDK 17.0.15 Security Update for Portable Linux Builds

Affects Red Hat OpenJDK 17.0.15Source GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2025-21587· High 7.4

Not known to be exploited · CVSS 7.4 High.

Data as of 3 Nov 2026, 10:57 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Apr 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 3 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Mavencom.oracle.java/java-sepkg:maven/com.oracle.java/java-seOther threatsAffected
  • 11.0.26 – 24
4 affected builds
Fixed in–
Mavencom.oracle.graalvm/graalvm-jdkpkg:maven/com.oracle.graalvm/graalvm-jdkOther threatsAffected
  • =17.0.14
  • =21.0.6
  • =24
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 OpenJDK 17.0.15 as a security update that fixes the identified vulnerabilities. Users should apply this update to replace version 17.0.14 after ensuring all previously released errata relevant to their system are applied. Detailed update instructions are available from Red Hat's official documentation. No additional mitigations are specified or required beyond applying the update.

Description

Red Hat has released an update for its OpenJDK 17 build for portable Linux, version 17.0.15, which replaces version 17.0.14. This update addresses multiple security issues including improvements to TLS connection support, compiler transformations, and Buffered Image handling. The update is rated as having a moderate security impact. No CVSS scores are provided in the advisory, and no exploits are known to be in the wild.

References

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