CVE-2026-87293
Description
A flaw was found in OpenJDK's Remote Method Invocation (RMI) component. An unauthenticated remote attacker can exploit this vulnerability by sending crafted data to exposed application programming interfaces (APIs). Successful exploitation allows unauthorized modification, deletion, or disclosure of accessible data, potentially impacting other connected systems.
Statement
Red Hat rates this vulnerability as Moderate severity because exploitation requires high attack complexity against exposed Remote Method Invocation (RMI) communication channels, without enabling full system compromise. The issue predominantly affects environments utilizing OpenJDK 8 where applications expose RMI endpoints across untrusted networks. Modern runtimes supported on Red Hat Enterprise Linux, including OpenJDK 11 and later versions, do not contain the vulnerable code.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.4 | N/A | 5.4 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | High |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Changed | N/A | Changed |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Understanding the Weakness (CWE)
Integrity,Confidentiality
Technical Impact: Gain Privileges or Assume Identity
Attackers might be able to modify the message and spoof the endpoint by interfering with the data as it crosses the network or by redirecting the connection to a system under their control. If an attacker can spoof the endpoint, they might gain all the privileges that were intended for the original endpoint.
Frequently Asked Questions
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