---
id: "CVE-2026-87413"
kind: "vulnerability"
aliases: ["CVE-2026-87413"]
title: "Oracle Solaris 11.4: local user can crash the filesystem stack"
severity: "medium"
cvss: 5.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "multi-user-hosts", "on-prem", "solaris"]
not_affected_if: ["no-local-logins", "single-user-host"]
published_at: "2026-10-20T22:20:19+00:00"
first_seen_at: "2026-10-23T21:57:25+00:00"
updated_at: "2026-10-25T04:12:11+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87413", "first_seen_at": "2026-10-23T21:57:25+00:00"}]
---

# Oracle Solaris 11.4: local user can crash the filesystem stack

A low-privileged local user on an Oracle Solaris 11.4 system can trigger a hang or repeatable crash in the Filesystems component. The impact is denial of service only, with no confidentiality or integrity loss.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `uname -v` on the Solaris host and compare against Oracle's patch list for 11.4
- unknown

## Fix

- Apply the Oracle Solaris 11.4 Filesystems fix from the Oracle Critical Patch Update for the quarter listed in the advisory
- unknown

## Timeline

- 2026-10-23T21:57:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-87413

## From the sources

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Filesystems).   The supported version that is affected is 11.4. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris. CVSS 3.1 Base Score 5.5 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_