# CVE-2019-0211: Apache HTTP Server Privilege Escalation Vulnerability

Source: https://junglewise.ai/threats/cve-2019-0211-apache-http-server-privilege-escalation-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2019-0211 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

In Apache HTTP Server versions 2.4.17 to 2.4.38, a local privilege escalation vulnerability exists when using MPM event, worker, or prefork. A less-privileged child process or thread can execute arbitrary code with the privileges of the parent process (typically root) by manipulating the scoreboard. This issue affects Unix-based systems only.

Technologies: [Apache HTTP Server](https://junglewise.ai/threats/technologies/http-server). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2019-0211 exploited in the wild?** Yes. CVE-2019-0211 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2019-0211?** Critical severity, with a CVSS score of 7.8, published 3 November 2021.

**Which products and versions are affected?** Apache HTTP Server 2.4.17 to 2.4.38.

**Is there a fix for CVE-2019-0211?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2019-0211 attacked?** It is attacked with local access, in a web application.

**Am I affected by CVE-2019-0211?** Check whether you run Apache HTTP Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Apache HTTP Server 2.4.17 to 2.4.38

## Timeline

- 2019-04-02: disclosed: Initial public disclosure via oss-security mailing list.
- 2021-11-03: advisory: NVD publication date.

## Related threats

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- [Apache HTTP Server mod_vhost_alias stack buffer overflow](https://junglewise.ai/threats/cve-2026-109163-stack-based-buffer-overflow-vulnerability-in-apache-http-server)
- [Apache HTTP Server mod_md NULL pointer dereference](https://junglewise.ai/threats/cve-2026-106023-null-pointer-dereference-vulnerability-in-apache-http-server-s)
- [Apache HTTP Server mod_dav_fs integer overflow in namespace handling](https://junglewise.ai/threats/cve-2026-93546-integer-overflow-in-mod-dav-fs-in-apache-http-server-through-2-4)
- [Apache HTTP Server mod_userdir path equivalence in single-dot directory](https://junglewise.ai/threats/cve-2026-79768-path-equivalence-single-dot-directory-vulnerability-in-apache)