---
id: "CVE-2019-0211"
kind: "vulnerability"
aliases: ["CVE-2019-0211"]
title: "Apache HTTP Server: Apache HTTP Server Privilege Escalation Vulnerability"
severity: "high"
cvss: 7.8
epss: 0.65005
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Apache HTTP Server", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["apache-httpd", "exploited", "linux", "runtime", "self-hosted"]
not_affected_if: ["managed-hosting", "no-in-process-scripting"]
published_at: "2019-04-08T22:29:00+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-0211", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2019-0211", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-0211", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Apache HTTP Server: Apache HTTP Server Privilege Escalation Vulnerability

Apache HTTP Server with the event, worker or prefork MPM lets code running in a less-privileged child process or thread (including scripts run by an in-process interpreter) manipulate the scoreboard to gain the privileges of the parent process, usually root. An attacker who already runs code inside a child worker can escalate to root on the server.

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

## Affected

- vendor:Apache HTTP Server affected ? fixed ?

## Fix

Apply the Apache HTTP Server update per vendor instructions; the CISA entry gives no fixed version in the sources.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-0211
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2019-0211
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2019-0211

## From the sources

In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Non-Unix systems are not affected.

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