---
id: "CVE-2020-14871"
kind: "vulnerability"
aliases: ["CVE-2020-14871"]
title: "Oracle Solaris and Zettabyte File System (ZFS): Oracle Solaris and Zettabyte File System (ZFS) Unspecified Vulnerability"
severity: "critical"
cvss: 10.0
epss: 0.80157
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Oracle Solaris and Zettabyte File System (ZFS)", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "infrastructure", "oracle", "self-hosted", "solaris", "zfs"]
not_affected_if: ["unknown"]
published_at: "2020-10-21T15:15:24+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:34+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-14871", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-14871", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14871", "first_seen_at": "2026-10-23T21:57:34+00:00"}]
---

# Oracle Solaris and Zettabyte File System (ZFS): Oracle Solaris and Zettabyte File System (ZFS) Unspecified Vulnerability

An unspecified flaw in Oracle Solaris and the ZFS Storage Appliance Kit is listed as actively exploited in the wild. The sources say it has high impact on confidentiality, integrity and availability, but do not describe the exact attack.

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

## Affected

- vendor:Oracle Solaris and Zettabyte File System (ZFS) affected ? fixed ?

## Fix

Apply the updates per Oracle's vendor instructions, as CISA requires.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-14871
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2020-14871
- 2026-10-23T21:57:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2020-14871

## From the sources

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Pluggable authentication module). Supported versions that are affected are 10 and 11. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Solaris. While the vulnerability is in Oracle Solaris, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle Solaris. Note: This CVE is not exploitable for Solaris 11.1 and later releases, and ZFSSA 8.7 and later releases, thus the CVSS Base Score is 0.0. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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_