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Fencer Vulns
medium 5.4

CVE-2026-87293 json

Vulnerability in Oracle Java SE (component: RMI).

published 2026-10-20 19 d ago modified 2026-10-27 12 d ago also EUVD-2026-106334

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits
0
none known

Summary

Vulnerability in Oracle Java SE (component: RMI). Supported versions that are affected are Oracle Java SE: 8u503 and 8u503-perf; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. While the vulnerability is in Oracle Java SE, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N).

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-87293 updated cvss 5.4

openjdk: Enhance RMI connections (Oracle CPU 2026-10)

  • Red Hat build of OpenJDK 1.8 java-1.8.0-openjdk-windows, java-1.8.0-openjdk-portable
    affected: no fix available
  • Red Hat Enterprise Linux 6 java-1.6.0-openjdk, java-1.7.0-openjdk, java-1.8.0-openjdk, java-1.6.0-openjdk-src, java-1.7.0-openjdk-src, java-1.8.0-openjdk-src, +7 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 java-1.6.0-openjdk, java-1.7.0-openjdk, java-1.8.0-openjdk, java-1.6.0-openjdk-src, java-1.7.0-openjdk-src, java-1.8.0-openjdk-src, +11 more
    affected: no fix available, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 java-1.8.0-ibm, java-1.8.0-ibm-src, java-1.8.0-openjdk, java-1.8.0-ibm-demo, java-1.8.0-ibm-jdbc, java-1.8.0-ibm-plugin, +20 more Red Hat Enterprise Linux 9 java-1.8.0-openjdk, java-1.8.0-openjdk-src, java-1.8.0-openjdk-demo, java-1.8.0-openjdk-javadoc, java-1.8.0-openjdk-headless, java-1.8.0-openjdk-fastdebug, +10 more
    affected: no fix available
  • Red Hat build of OpenJDK 11 ELS java-11-openjdk, java-11-openjdk-windows, java-11-openjdk-portable Red Hat build of OpenJDK 17 java-17-openjdk-windows, java-17-openjdk-portable Red Hat build of OpenJDK 21 java-21-openjdk-windows, java-21-openjdk-portable Red Hat build of OpenJDK 25 java-25-openjdk-windows, java-25-openjdk-portable Red Hat Enterprise Linux 8 java-17-openjdk, java-21-openjdk, java-17-openjdk-src, java-21-openjdk-src, java-17-openjdk-demo, java-21-openjdk-demo, +38 more Red Hat Enterprise Linux 9 java-17-openjdk, java-21-openjdk, java-25-openjdk, java-17-openjdk-src, java-21-openjdk-src, java-25-openjdk-src, +63 more
    +1 more products
    Red Hat Enterprise Linux 10 java-21-openjdk, java-25-openjdk, java-21-ibm-semeru-certified-jdk
    not affected: vulnerable code not present
  • Red Hat Hardened Images hi/openjdk, java-21-openjdk, java-25-openjdk, java-17-openjdk-portable, java-21-openjdk-portable, java-25-openjdk-portable
    not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
12 d ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected products

  • Oracle Corporation Oracle Java SE

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.