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CVE-2026-21925VulnerabilityPublished Updated

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

Affects Red Hat java-1.8.0-openjdkSource GCVE Database

0

Mentioned vulnerabilities

Authoritative record:CVE-2026-21925· Medium 4.8

Not known to be exploited · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 11:07 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 16% 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:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Oracle CorporationOracle Java SEAffected
  • 8u471 – 25.0.1
7 affected builds
Fixed in–
Oracle CorporationOracle GraalVM for JDKAffected
  • =17.0.17
  • =21.0.9
Fixed in–
Oracle CorporationOracle GraalVM Enterprise EditionAffected
  • =21.3.16
Fixed in–
Mavencom.oracle/java-sepkg:maven/com.oracle/java-seOther threatsAffected
  • 11.0.29 – 25.0.1
4 affected builds
Fixed in–

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

Description

The java-1.8.0-openjdk packages provide the OpenJDK 8 Java Runtime Environment and the OpenJDK 8 Java Software Development Kit. Security Fix(es): * JDK: Improve JMX connections (CVE-2026-21925) * JDK: Improve HttpServer Request handling (CVE-2026-21933) * JDK: Enhance Certificate Checking (CVE-2026-21945) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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