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CVE-2019-0211

Apache HTTP Server Privilege Escalation Vulnerability

  • High 7.8
  • Exploited: added to CISA KEV 3 Nov 2021
  • A public exploit reference is listed

Description

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.

Key facts

Published
8 Apr 2019
Last changed
21 Oct 2025
Assigned by
apache
KEV added
3 Nov 2021
KEV fix due
3 May 2022
EPSS
65.005% likely to be exploited in the next 30 days, higher than 99.264% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.8CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What to do

  • Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
ApacheApache HTTP Server
  • 2.4.17 to 2.4.38 (affected)

Timeline

  1. 8 Apr 2019 Published
  2. 3 Nov 2021 CVE-2019-0211 added to CISA KEV
  3. 3 Nov 2021 Added to the CISA KEV catalogue

Weakness

References