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CVE-2020-14871: Oracle Solaris and Zettabyte File System (ZFS) Unspecified Vulnerability

CVSS: 10.0v3.1CriticalKEVAnalyzed
Published 21-10-2020Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2020-14871 is a critical (CVSS 10.0) Out-of-bounds Write vulnerability in Oracle Solaris and Zettabyte File System (ZFS). It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 80.16% chance of exploitation in the next 30 days, higher than 99.6% of scored vulnerabilities. 7 public exploits are recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
80.16%
0%100%
Critical · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits7reference, metasploit, exploit-database

Timeline

  1. 21-10-2020
    PublishedVulnerability first disclosed.
  2. 03-11-2021
    Added to CISA KEVOracle Solaris and Zettabyte File System (ZFS) Unspecified Vulnerability
  3. 03-05-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

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).

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

80.16%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

0.00 pp

From 80.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
80.16%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
03-11-2021
Federal due date
03-05-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2020-14871

Public exploits

7 found
  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

Show all 7 exploits
  • MetasploitMetasploitremoteUnverified

    Oracle Solaris SunSSH PAM parse_user_name() Buffer Overflow

    exploit/solaris/ssh/pam_username_bof

    Maturity: poc

  • exploit-databaseremotesolarisUnverified

    Solaris SunSSH 11.0 x86 - libpam Remote Root

    Maturity: poc

  • exploit-databaseremotesolarisUnverified

    Solaris SunSSH 11.0 x86 - libpam Remote Root (2)

    Maturity: poc

  • exploit-databaseremotesolarisUnverified

    Solaris SunSSH 11.0 x86 - libpam Remote Root (3)

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Oracle1 product
Oracle corporation1 product

2 vendors · 2 products

References

8 links