Threats / Apache / CVE-2019-0211
CVE-2019-0211
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Apache HTTP Server vulnerability
Apache HTTP Server with MPM event, worker, or prefork allows less-privileged child processes to execute code with parent process privileges by manipulating the scoreboard, enabling privilege escalation to root.
Verdict
Today item — known-exploited.
A use-after-free vulnerability in Apache HTTP Server's process management enables local privilege escalation from child processes to the parent process. Attackers with code execution in sandboxed contexts can gain root-level access by exploiting scoreboard manipulation.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
8 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
Probability (EPSS)
EPSS 0.65005 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Apache, HTTP Server. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-416 Use After Free — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I gain initial code execution within a less-privileged Apache child process or through an in-process scripting interpreter.
Business
Attacker establishes foothold in web server process with limited permissions.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I manipulate the Apache scoreboard data structure to trigger a use-after-free condition in the parent process.
Business
Memory safety violation creates window for arbitrary code execution at elevated privilege level.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute arbitrary code with the privileges of the parent Apache process, typically running as root.
Business
Complete server compromise with ability to read sensitive data, modify configurations, and pivot to other systems.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05