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Weekly Signal
Live intelligence Updated 19 Aug 2026 · 20:27 UTC

Oracle · Solaris, Solaris and Zettabyte File System (ZFS)

CVE-2020-14871

Oracle Solaris and Zettabyte File System (ZFS) Unspecified Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Oracle Security advisory Cpuoct2020

View response plan
CVSS10.0
EPSS79.8%
KEVYes
ExploitationConfirmed exploitation
RemediationExplicit patch identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 79.8%; technical severity is CVSS 10.0.

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).

Who should care

  • Teams operating Solaris, Solaris and Zettabyte File System (ZFS)
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Solaris, Solaris and Zettabyte File System (ZFS) is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Oracle Security advisory Cpuoct2020
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Patch

Advisory

Required Action

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
CWE-787
Affected versions
Oracle Solaris (Start Including 10, End Excluding 11.1 | Version 9); Oracle Solaris and Zettabyte File System (ZFS)
Fixed versions
Oracle Solaris (Fixed from 11.1)
Published
21 October 2020
Attack vector
Network
Privileges required
None
User interaction
None

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 79.8%
  4. Signal calculated at 83

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.