---
id: "CVE-2026-16521"
kind: "vulnerability"
aliases: ["CVE-2026-16521"]
title: "BMC firmware: insufficient input filtering lets injected OS commands run"
severity: "high"
cvss: 7.2
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["bmc", "infrastructure", "self-hosted", "servers"]
not_affected_if: []
published_at: "2026-10-27T08:16:53+00:00"
first_seen_at: "2026-10-27T08:31:47+00:00"
updated_at: "2026-10-27T08:32:33+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16521", "first_seen_at": "2026-10-27T08:31:47+00:00"}]
---

# BMC firmware: insufficient input filtering lets injected OS commands run

An attacker can inject a command payload into a BMC function, a flaw caused by insufficient input filtering. The payload may execute when the related service is restarted.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-27T08:31:47+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-16521

## From the sources

An OS command injection vulnerability exists because of insufficient input filtering. An attacker can inject a command payload into a BMC function; the payload may execute when the related service is restarted.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_