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CVE-2025-21587VulnerabilityPublished Updated

Red Hat Security Advisory: java-1.8.0-openjdk security update

Affects Red Hat java-1.8.0-openjdkSource 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 an official security update for java-1.8.0-openjdk packages on Red Hat Enterprise Linux 7 Extended Lifecycle Support. Users should apply this update to remediate the vulnerabilities. Before applying this update, ensure all previously released errata relevant to the system have been installed. Detailed instructions for applying the update are available in Red Hat's documentation. No additional mitigation steps are indicated by the vendor.

Description

Red Hat has issued a security update for the java-1.8.0-openjdk packages, which provide the OpenJDK 8 Java Runtime Environment and Software Development Kit. The update addresses three vulnerabilities: CVE-2025-21587 improves TLS connection support, CVE-2025-30691 enhances compiler transformations, and CVE-2025-30698 improves Buffered Image handling. These vulnerabilities have been rated with moderate security impact. The update is available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Users are advised to apply this update after ensuring all previous errata are applied.

References

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