Exploited vulnerability · CISA KEV

Is CVE-2019-0211 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · Apache HTTP Server · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-0211, Apache HTTP Server Privilege Escalation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 940 days after it was published. It affects Apache HTTP Server. If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

Apache HTTP Server, 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 code with the privileges of the parent process (usually root) by manipulating the scoreboard.

What to do

1. Check whether you run it. Look for HTTP Server in your asset inventory, including appliances and cloud images. Stack check lists every exploited Apache CVE at once.
2. Apply the fix. Apply updates per vendor instructions.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 8 Apr 2019.
4. Get told next time. Email alerts when CISA adds a CVE for Apache.

Other exploited CVEs in HTTP Server

• CVE-2024-38475: Apache HTTP Server Improper Escaping of Output Vulnerability (1 May 2025)
• CVE-2021-42013: Apache HTTP Server Path Traversal Vulnerability (3 Nov 2021)
• CVE-2021-41773: Apache HTTP Server Path Traversal Vulnerability (3 Nov 2021)

References

• nvd.nist.gov/vuln/detail/CVE-2019-0211

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2021 · Apache scorecard · act-now radar.